Unequal Distribution of 6 methoxy-2- benzoxazolinone(MBOA)Is the Main Reason for  Phototropism in Maize Coleoptiles

Abstract

Abstract: The distribution of 6-methoxy-2-benzoxazolinone (MBOA) which is induced by blue light stimulation in maize ( Zea mays L. ) coleoplile was investigated by HPLC analysis. The results showed that: 1. The MBOA content on the irradiated side of the coleoptile was 1.5 fold more than that on the shaded side. 2. There was little change of IAA on both sides of the coleoptile which was treated with phototropic stimulation. 3. The growing coleoptile bent towards the side which was treated with MBOA, 5,6-dimethoxy-2-benzoxazolinone (DMBOA) or 2-chloro-5,6-dimethoxy-2-benzoxazolinone ( C1-DMBOA). The above results indicated that the phototropic bending of the coleoptile was attributed to unequal distribution of MBOA.

Key words: Maize eoleoptile, Phototropism, 6-methoxy-2-benzoxazolinone, IAA

CHEN Ru-Min. Unequal Distribution of 6 methoxy-2- benzoxazolinone(MBOA)Is the Main Reason for Phototropism in Maize Coleoptiles[J]. J Integr Plant Biol., 1999, 41(3): -.

[1]	Michitaka Notaguchi, Shmuel Wolf, and William J. Lucas. Phloem-Mobile Aux/IAA Transcripts Target to the Root Tip and Modify Root Architecture [J]. J Integr Plant Biol., 2012, 54(10): 760-772.
[2]	Yan-Xia Mai, Long Wang, and Hong-Quan Yang. A Gain-of-Function Mutation in IAA7/AXR2 Confers Late Flowering under Short-day Light in Arabidopsis [J]. J Integr Plant Biol., 2011, 53(6): 480-492.
[3]	Winslow R. Briggs, Tong-Seung Tseng, Hae-Young Cho, Trevor E. Swartz, Stuart Sullivan, Roberto A. Bogomolni, Eirini Kaiserli and John M. Christie. Phototropins and Their LOV Domains: Versatile Plant Blue-Light Receptors [J]. J Integr Plant Biol., 2007, 49(1): 4-10.
[4]	Nai-Hao Ye, Hong-Xia Wang, Guang-Ce Wang, Zheng-Quan Gao and De-Mao Li. Phototropism of Thalli and Rhizoids Developed from the Thallus Segments of Bryopsis hypnoides Lamouroux [J]. J Integr Plant Biol., 2006, 48(6): -.
[5]	SUO Jin-Feng , PU Li , LIANG Xiao-E , XUE Yong-Biao. Identification of an Endothelium-specific Gene GhIAA16 in Cotton (Gossypium hirsutum) [J]. J Integr Plant Biol., 2004, 46(4): 472-479.
[6]	KE De Sen, WANG Ai Guo, SUN Gu Chou, DONG Liang Feng. The Effect of Active Oxygen on the Activity of ACC Synthase Induced by Exogenous IAA [J]. J Integr Plant Biol., 2002, 44(5): 551-556.
[7]	LIU Yu-Jun, ZHAO Nan-Ming. Modes of Action of Phytochromes in Establishing DifferentPhototropic Responsiveness of Maize Coleoptiles [J]. J Integr Plant Biol., 2001, 43(9): 923-928.
[8]	WANG Xiang-Bin, WANG Zhen, DUAN Jun-Hua and CUI Ke-Ming. Change in the Concentration and Tissuelocalization of Endogenous IAA During the Regeneration of Vascular Tissues After Xylem Removal in Broussonetia papyrifera [J]. J Integr Plant Biol., 1999, 41(12): -.
[9]	CUI Ke-Ming, WANG Xiang-Bin, DUAN Jun-Hua and WANG Su-Yun. Change of Endogenous IAA During Cambial Activity and IAA-binding Protein in Cambial Cells in Broussonetia papyrifera [J]. J Integr Plant Biol., 1999, 41(10): -.
[10]	CHEN Yi-Feng, ZHOU Xie, TANG Ri-Sheng, ZHANG Jin-Yu and MEI Chuan-Sheng. Correlation Between Appearance of Embryogenic Cells and the IAA Levels in Rice Somatic Cell Culture [J]. J Integr Plant Biol., 1998, 40(5): -.
[11]	JIANG Ling, WANG Zhang-Rong and ZHOU Xie. Effect of La(NO3)3 on Root Growth and IAA Content of Masson Pine Seedlings [J]. J Integr Plant Biol., 1998, 40(3): -.
[12]	Li Chun-jian. Autoinhibition in Polar Transport of Indoleacetic Acid [J]. J Integr Plant Biol., 1997, 39(8): -.
[13]	Wang Xi, Yu Mei-yu, Tao Long-xing and Huang Xiao-lin. Effect of Pentefezol on the Endogenous IAA Content in Rice Seedlings [J]. J Integr Plant Biol., 1997, 39(7): -.
[14]	Jia Wen-suo, Huang Cong-lin and Zhang Da-peng. Immuno-gold Localization of IAA in the Leaf Cells of Vicia faba [J]. J Integr Plant Biol., 1997, 39(7): -.
[15]	Zhao Zhong-ren, Li Guang-ren, Huang Gui-qin and Yang Shu-hua. ffects of Some Inhibitors on Potassium-and IAA-Induced Adventitious Root Formation of Excised Cucumber Cotyledon [J]. J Integr Plant Biol., 1997, 39(1): -.

Unequal Distribution of 6 methoxy-2- benzoxazolinone(MBOA)Is the Main Reason for Phototropism in Maize Coleoptiles

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments