March 1984, Volume 26 Issue 3

 

          Research Articles
The Influence of the Mode of Formulation on the Biological Activity of Friaeontanol
Author: Qian Chang-tao, Deng Dao-li, Zhou Hui-fen, Chen Shan-kun, Liu Guo-ping and Pan Xiao-yun
Journal of Integrative Plant Biology 1984 26(3)
      
    
Abstract (Browse 1777)  |  Full Text PDF       
Anatomical Studies of Regeneration after Ringing of Phellodendron amurense Rupr
Author: Zhao Guo-fan, Cao Yang, Fan Fang, Zhou Li-jun, Wang Ye-gang and Huang Yu-xian
Journal of Integrative Plant Biology 1984 26(3)
      
    
Abstract (Browse 1660)  |  Full Text PDF       
Investigation on the Procaryotic Microfossils from the Gaoyuzhuang Formation, Jixian, North China Cont
Author: Xu Zhao-liang
Journal of Integrative Plant Biology 1984 26(3)
Abstract (Browse 1870)  |  Full Text PDF       
Characteristics of Plant Communities and Copper Content in Dominant Plants in Hongtou Shan Copper Ore Region of Liaoning Province
Author: Kong Ling-shao, Wang Mei-lin, Hu Yi-hui, Miao You-gui and Kong Fan-zhi
Journal of Integrative Plant Biology 1984 26(3)
      
    Copper content in the soil of Hongtou Shan copper ore is 40每2000 ppm, with mean value at 471 ppm. Standard deviation is 667.5. There are many principal types of plant communities: Coppice of Quercus liaotungensis and Corylus sp. and Lespedeza bicolor scrub. In the soli with copper content more than 500 ppm, Gypsophila pacffica usually grows together. It significantly indicates the abnormal soil with respect to copper content. Analysis of copper content for 347 samples of 48 species shows: Limiting value of copper content is 8.45每44.40 ppm in dry plants, with difference of the values being 35.95. The plants contained copper at 5每10 ppm account for 12.8% of the total plants, at 10每30 ppm for 76.9% and at 30每45 ppm for 10.6%. Direct correlation is found between copper content in the Plants and in the soil, for example, Gypsophila pacifiea r=0.844 (N=8) It is important in biogeoehemical prospecting. There are no striking correlation between copper content of the plants and pH and organic matter content of soil.
Abstract (Browse 1813)  |  Full Text PDF       
The Phytoeoenological Features of Mixed Evergreen and Deciduous Broadleaf Forest on Yellow-brown Soil Mountain in Guangxi
Author: Wang Xian-pu arrd Hu Shun-shi
Journal of Integrative Plant Biology 1984 26(3)
      
    The mixed evergreen and deciduons broadleaf forest on yeIlow-brown soil mountain belongs to climax vegetation type in humid subtropics. Analysis of its phytocoenological features shows that its physiognomy is characterized by leathery and herbaceous, simpie-leaved, microphyllous and mesophyllous types of evergreen broadleaf phanerophytes and deciduous broadleaf phanerophytes. As the structure of the community, from the aerial top to the forest floor, there are three distinct layers, namely, the tree layer, the shrub layer and the herbaceous layer. Moreover, the tree layer can be subdivided into three sublayers. Synusia structure is considerably complex, and there are different dominant synusia in each layer. The epiphytes and liana are not as abundant as that of seasonal rain forest. Floristic composition of the community is dominanted by endamic chinese subtropical plant species and East Asian elements. This condition indicates that it can be considered as a special vegetational type of humid chinese subtropics. Analysis of population in the community shows that most of the edificators have different age groups indicating normal reproduction of saplings and seedlings. This means that the habitat is suitable for their growth and reproduction during a certain duration of time. The community will be able to maintain its relative stable status. However, such a forest area is not large, and it is necessary to be protected intensively. Many kinds of rare plants in this forest, for example, Fagus lucida, Fagus longipetiolata, Cyclobalanopsis multinervis, Pseudosassafras tsumu, Manglietia fordiana, Manglietia chingii, Michelia maudiae, Castanopsis lamontii, Schima argentea, Pterostyrax leveillei etc. are worth mentioning.
Abstract (Browse 2051)  |  Full Text PDF       
Isolation and Indentification of Steroidal Saponins from Dioscorea zingiberensis Wright
Author: Liu Cheng-lai, Chen Yan-yong, Tang Yi-fang and Li Bo-gang
Journal of Integrative Plant Biology 1984 26(3)
      
    Four known steroidal compounds were isolated from the rhizomes of Dioscorea zingiberensis Wright gathered from Hubei Province. Their structures were identified by means of spectroscopic analyses as Epi-smilagenin[i]; 3-O-(汕-D glucopyranosyl) diosgenin[j]; 3-O-[汕-D-glucopyranosyl (1↙ 4)-汕-D-glucopyranosyl-diosgenin[k]; 3-O {汕-D glucopyranosyl (1↙ 3)-[汐-L-rhamnopyranosyl (1 ↙2)]-汕-D glucopyranosyl} diosgenin [l].
Abstract (Browse 2083)  |  Full Text PDF       
Study on Antibiotic Constituents of Nanclea officinalis Pierre ex Pitard
Author: Chen Meng-jing and Hou Lin-lin
Journal of Integrative Plant Biology 1984 26(3)
      
    Nauclea officinalis pierre ex Pitard is a Chinese traditional and herbal drug for antibiotics and anti-inflammation. Four compounds have been isolated from it and identified as naucleidinal, quinovaic acid, 汕-sitosterol and alkaloid C20H14N202. Two alkaloids have inhibiting effect on bacteria. The structure of C20H14N202 will be identified later.
Abstract (Browse 1864)  |  Full Text PDF       
The Development of Microsporangium and Microspore in Azolla
Author: Lin Yue-chan and He Guo-fan
Journal of Integrative Plant Biology 1984 26(3)
      
    This paper presents a detailed report on the developmental progresses of the microsporangium and its microspores in Azolla filiculoides Lam., and shows the morphologicaI structures of the respective developmental stares with the aid of scanning electron photographs. The entire developmental progress may be divided into six stages: ( 1 ) The microspore mother cell initiating stage The microsporangium initial on the placenta of the sporocarp gave rise a sporogenous cell, and then divided four times to form sixteen microspore mother cells; (2) The meiotic stage每The microspore mother cells initiated meiosis inside their calIose walls. The radial and inner tangential walls of the tapetum were dissolved at the same time and followed by the formation of a sporoplasmodium; (3) The microspore shrinking i每After the callose walls of tetrads was dissolved, those microspores that just released from the callose walls shrunk intensely and became spherical later again. The sporoderm of microspores was principally synthesized in this stage, and the volume of microspores became evidently increased. The microspores then gradually moved to the periphery of the sporoplasmodium; (4) The microspore shrinking j-Each microspore formed a large vacuole and gave rise the second contraction. The periphery of the sporoplasmodium was gradually dissolved; (5) The massulae forming stage每The sporoplasmodium was dissolved successivelly, and the undissolvable granules and organelle membrane residues. became aggregated into the compartmental layer, and the microsporangium was divided into several large vesicles, each vesicle will form a massulae; (6) The microspore germinating stage每The ,natured microspores inside the massulae each gave rise an androgonial initial which divided two times to form four antherozoid mother cells and then gave rise the antherozoids. The relationships between the various morphological structures and their functions in the microsporangium developmental progress have breify discussed. In addition, our viewpoints have compared with those of previous investigations.
Abstract (Browse 3318)  |  Full Text PDF       
Studies on the Chemical Components in the Bark of Manglietta yuyuanensis Law
Author: Su Jing-chi and Li Jing-tian
Journal of Integrative Plant Biology 1984 26(3)
      
    
Abstract (Browse 1634)  |  Full Text PDF       
The Effects of Boron Deficiency on Nucleolar Vacuole in the Meristematic Cells of the Cucumber Root Tip
Author: Zhou Shi-gong
Journal of Integrative Plant Biology 1984 26(3)
      
    
Abstract (Browse 1733)  |  Full Text PDF       
Sp., Ti and Ep Allele Frequencies Among 82 Representauves of Cultivated Varieties of Soybean in China
Author: Hu Zhi-ang and Wang Hong-xin
Journal of Integrative Plant Biology 1984 26(3)
      
    
Abstract (Browse 1637)  |  Full Text PDF       
Fusicoccin-ethylene Interaction in the Growth of Etiotated Pea Seedlings
Author: Liao Zhao-zhou and Pan Rui-zhi
Journal of Integrative Plant Biology 1984 26(3)
      
    Intact etiolated seedlings of pea (Pisum sativum L. cv. guangzhou honqhua) were used to investigate the changes in the physiological activities by the treatment with fusicoccin (FC), ethylene, and FC + ethylene respectively with the aim of understanding the fusicoccin-ethylene interaction. After the combined application of FC and ethylene, FC may partly removes the inhibition of elongation and fresh weight caused by ethylene. However, that the reduction of DNA synthesis and cell division resulted from ethylene can not eliminated by FC. Ethylene induces the microfibril of cell wall to orientate longitudinally while FC alters microfibrillar orientation by random deposition. FC is also capable of decreasing the inhibition of K+ uptake, H+ secretion and respiratory rate caused by ethylene. The authors consider that the cause of FC partly antagonize ethylene on reversing ethylene-inhibited growth appears not to be reduced the content of endogenous ethylene, but may be caused by raising the respiratory rate, stimulating the H+ secretion and K+ uptake. Eventually, cells uptake much water and result in increase of their elongation and swelling.
Abstract (Browse 1709)  |  Full Text PDF       
Isciatica and Observation of Chloroplast DNA from the Rape and Tobacco
Author: He Guo-shun, Wang Xun-ming, Ye Zheng-xiang, and Cai Yi-xin (Tsai I-shun)
Journal of Integrative Plant Biology 1984 26(3)
      
    Chloroplast DNA (ctDNA)from the rape (Brassica napus) and tobacco (Nicotiana tabacum) has been isolated using a intact pure chloroplast lysis methed followed by discontinute sucrose gradient centrifugation and DNase treatment. Our electron microscopic observation on the chloroplast DNAs revealed clearly flowerlike configurations made up of many ※petal-loops§ linked together in the middle to forming one ※central-loop§. The number of petal-loops per molecule varies from 5 to 50, usually about 7 or 8. The size of the petal-loops is not much different, being 1.52 ㊣ 0.48米m and 1.28 ㊣ 0.37米m in average length for rape and tobacco respactively. Some petal-loops appear attached to membrane protein, indicating the possibility that ctDNAs may have a similar organization as chromosome. Besides, some configurations are quite large with a total of over 50 petal-loops including 2 or 3 molecules linked together by petal-loops, and some rather small ones with a single circular molecule, the size of which is about to 1每2 petal-loops in length. Such variation in the size of ctDNA may suggest the possibility of hithly organized internal molecular arragement of the ctDNA and occurrence of intramolecular of intermolecular recombination.
Abstract (Browse 1911)  |  Full Text PDF       
Studies on the Chemical Constituents of Trunk of Amentotaxeus argotaema Hance Pilger Native to China
Author: Ma Zhong-wu, He Guan-fu and Yin Wan-fen
Journal of Integrative Plant Biology 1984 26(3)
      
    
Abstract (Browse 1765)  |  Full Text PDF       
lntrageneric Variation of Pollen Types in the Genus Phyllanthus L.
Author: Long Huo and Yu Cheng-hong
Journal of Integrative Plant Biology 1984 26(3)
      
    Basing on the pollen morphology of 22 Asian species, 17 from China, of PhylIanthus, 10 pollen types are recognized and described. Transformations of pollen type in this genus from a tricolporate one to a peripor(or) ste one are in succession and through 3 different pathways. It is interesting enough that the ※successiformy§ and ※spiralizaton§ pattern are all occurred.
Abstract (Browse 1766)  |  Full Text PDF       
The Pollen Morphology and Exine Ultrastructure of Paeonia L in China
Author: Xi Yi-zhen
Journal of Integrative Plant Biology 1984 26(3)
      
    The pollen morphology of 9 species of Paeonia L. has been investigated with both light microscope and scanning electron microscope. In addition, the exine structure of pollen grains of Paeonia suffruticosa and P. lactiflora was examined by transmission electron microscope. Tricolporoidate aperture is an important character of the pollen grains of the Paeonia. The surface of the exine is characterized by reticulate, foveolate and irregularly tuberculate-foveolate sculpture under the SEM. Thin sections of the pollen of this genus shows that the layers of exine are complete i.e. a perforate rectum to semitectum, columellae and foot layers. The endexine is continuous, considerably thickened in the aperture areas and relatively thin or indistinct in the mesocolpia. Paeonia has been placed in Ranunculaceae. But since the beginning of this century many authors have suggested to separating Paeonia from Ranunculaceae. Pollen marphology supports such separation. In Ranunculaceae most pollen grains are tricolpate or have other types of aperture, and exine with spinules and perforations between them. In electron microscopy, the ektexine contains a foot layer, columellae, and perforate rectum, the columellar layer with two types of columellae; the endexine is generally thin. However, the columellar layer of Paeonia has only monomorphic columellae. Some authors considered that there is a close relationship between Paeonia and the Dilleniaceae, but these also differ in the characters of the pollen grains. In Paeonia the constriction of the colpus in equator is in some degree similar to that of Theaceae (Camellia sasanqua Thunb.), Guttiferae (Hypericum L.), Actinidiaceae and Rosaceae. But in the other respects they are quite different. In sum, the pollen morphology of Paeonia is unique. So the palynological information supports Takhtajan's view that Paeonia should be elevated to a family (Paeoniaceae) or order (Paeoniales).
Abstract (Browse 2335)  |  Full Text PDF       
Uitrastructure of Anther Tissue and Microsporogenesis in Tai Gu Nuclear Male-Sterile Wheat
Author: Chen Zhu Xi-zhao, Chen Yao-tang and Gao Xin-zeng
Journal of Integrative Plant Biology 1984 26(3)
      
    This paper deals with the electron microscopic observations of anther tissues and microsporogenesis of Tai Gu male sterile wheat plant, which is a new species initially discovered in Tai Gu nE Shansi province, China. The results are summarized as follows: 1. There was a tendency of early development of tapetum cells in Tai Gu sterile wheat plant, i.e. the tapetum cells seemed to have developed rapidly toward maturation between the period of pollen mother cell formation and prophase I of reduction division, which is followed by degeneration. Its ultrustructure is somewhat similar to the highly developed tapetum cells of fertile plant at the time of development from tetrad to early microspore stage. A significant character of the nltrastructure of the highly developed mature tapetum cells was the appearance of many sharply-defined endoplasmic reticulum, which demonstrated in a parallelly arranged structure in section. Phagocytic vacuoles were often surrounded by the endoplasmic reticulum. 2. At the prophase I of reduction division, the ultrastructure of pollen mother cells in sterile plant began to show some disparities from that of fertile pIant. Among which there were some concentric circle-shaped or bundle-shaped endoplasmic reticula and many ribosome aggregation in the pollen mother ceils of sterile plant. Perhaps, these features might be relevant to the break down of microtrabecular system. In addition, some large or small dark osmiophilic particles were visible in the cells. From all the feature observed, the fact that activities of endoplasmic reticulum in the anther of Tai Gu wheat is relation to protein synthesis warrants our attention.
Abstract (Browse 1867)  |  Full Text PDF       
Abnormal Development of Regenerated Bark in Eucommia ulmoides
Author: Li Zheng-li (Lee Cheng-lee) and Cui Ke-ming
Journal of Integrative Plant Biology 1984 26(3)
      
    After the girdled trunk of Eucommia ulmoides Oliv. was locally damaged usually no bark was regenerated at the injured area. However, abnormal structures were observed in the newly-formed bark in the adjacent region. Similar results also occurred in simulated experiments. After girdling, a strip about 10℅2 cm2 and 1 mm in depth was scraped in the exposed area ensuring no bark regeneration in this artificially ruined area. Hence one month after the treatment it was seen that new vascular cambium developed in the regenerated bark around the destroyed area. However, the newly-formed bark above the harmed area was about two-fold thicker than that below the area. The differentiation of cambium and starch distribution were quite different on both sides.
Abstract (Browse 1816)  |  Full Text PDF       
Karyotypes, Banding Patterns and the Evolution of Different Ploidy Wheats
Author: L邦i Ping and Zhang Zi-li
Journal of Integrative Plant Biology 1984 26(3)
      
    Karyotypes and Giemsa N banding patterns of 13 species of different ploidy wheats have been studied by means of a new method of preparing mitotic chromosome sample in plant. Chromosomes of all diploids and Emmer are metacentric chromosomes, while submetacentric chromosomes occur only in T. timopheevii and T. aestivum. The number of satellite chromosome in the polyploid wheats is not the case of the amount of diploid. Diploid species do not show any N-bands except for T. speltoides. The banding pattern of T. timopheevii is different from that of Emmer. According to the results, authors consider: 1. In the evolution of polyploid wheats, certain variances arise frmn morphological and structural variation of chromosomes; 2. T. speltoides is of importance to the evolution of polyploid wheats and may not only involve the origin of the B genome but also the G genome; 3. The origin of the B genome perhaps is polyphyletic, i.e. 2 or more amphidiploids included T. speltoides crossing each other result in the present of B genome by recombination or chromosome substitution, and 4. T. dicoccoide and T. timopheevii may have evolved from a common ancestor.
Abstract (Browse 1954)  |  Full Text PDF       
Analysis of Unusual Fatty Acid in Seed-Oils from Plant of Pinaceae Indigenous to Northeast of China
Author: Guo Yu, Wang Hong-dou, Wang Ya-je and Li Xia-bing
Journal of Integrative Plant Biology 1984 26(3)
      
    Isolation and identification of cis-5, 9-octadecadienoic acid, cis-5, 9, 1200 tadecatrienoic acid, and cis-5, 11, 14-eicosatrienoic acid from seed-oil of Pinus tabulaeformis Carr. and also the regularity of distribution of the three fatty acids in 12 kinds of seed-oils from plants of Pinaceae indigenous to northeast of china were reported.
Abstract (Browse 1966)  |  Full Text PDF       
 

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