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2016年 第58卷 第10期 刊出日期：2016-10-09

2016年 第58卷 第10期
刊出日期：2016-10-09

  

Pollen size strongly correlates with stigma depth among Pedicularis species

Xiang-Ping Wang, Wen-Bin Yu, Shi-Guo Sun, and Shuang-Quan Huang

2016, 58(10):  818-821.  doi:10.1111/jipb.12477

摘要 ( 1813 )  

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It was often observed a positive correlation between pollen size and style length among different species. However, Darwin (1877) had proposed that pollen size should be positively correlated with stigma depth rather than style length, given that pollen tubes first enter the stigma autotrophically, thereafter grow through the style heterotrophically. We provide evidence in support of the Darwin’s hypothesis by surveying 42 Pedicularis species with the phylogenetic independent contrast analysis.

Deciphering the epitranscriptome: A green perspective

Alice Burgess, Rakesh David, and Iain Robert Searle

2016, 58(10):  822-835.  doi:10.1111/jipb.12483

摘要 ( 1759 )  

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With over 100 known RNA modifications, understanding the repertoire of RNA modifications will be a huge undertaking. This review summarizes what is known about RNA modifications. In Arabidopsis, RNA ribose modifications, base methylations and pseudouridylation are required for normal development and these modifications can regulate RNA structure, turnover and translation.

OsGRF4 controls grain shape, panicle length and seed shattering in rice

Pingyong Sun, Wuhan Zhang, Yihua Wang, Qiang He, Fu Shu, Hai Liu, Jie Wang, Jianmin Wang, Longping Yuan, and Huafeng Deng

2016, 58(10):  836-847.  doi:10.1111/jipb.12473

摘要 ( 2402 )  

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A novel rice gene PT2 is cloned, which is synonymous with Growth-Regulating Factor 4 (OsGRF4). It positively regulates grain shape, panicle length and negatively regulates seed shattering in rice. A unique mutation at the target site of OsmiRNA396 in OsGRF4 may enhance the expression of OsGRF4, resulting in phenotypic difference.

A bestrophin-like protein modulates the proton motive force across the thylakoid membrane in Arabidopsis

Zhikun Duan, Fanna Kong, Lin Zhang, Wenjing Li, Jiao Zhang, and Lianwei Peng

2016, 58(10):  848-858.  doi:10.1111/jipb.12475

摘要 ( 1637 )  

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This work describes a novel bestrophin-like chloride channel, AtBest, in chloroplasts. By mediating the influx of Cl^– into thylakoid lumen, AtBest directly modulates the partitioning of proton motive force across the thylakoid membrane. This kind of ion transport and homeostasis is essential for fine-tuning photosynthesis under fluctuating environmental conditions.

Abscisic acid and ethephon regulation of cellulase in the endosperm cap and radicle during lettuce seed germination

Bingxian Chen, Jun Ma, Zhenjiang Xu, and Xiaofeng Wang

2016, 58(10):  859-869.  doi:10.1111/jipb.12479

摘要 ( 1948 )  

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Cellulase activity, and related protein and transcript abundances of two lettuce cellulase genes, LsCEL1 and LsCEL2, were investigated in the endosperm cap and radicle during lettuce seed germination in water, ABA or ethephon. Our results suggested that cellulase plays a role in endosperm cap weakening and radicle elongation during germination.