J Integr Plant Biol ›› 2016, Vol. 58 ›› Issue (7): 614-617.DOI: 10.1111/jipb.12468

• •    下一篇

Shade-induced stem elongation in rice seedlings: Implication of tissue-specific phytohormone regulation

Huihui Liu, Chuanwei Yang and Lin Li*   

  • 收稿日期:2016-01-18 接受日期:2016-02-16 出版日期:2016-02-17 发布日期:2016-02-17

Shade-induced stem elongation in rice seedlings: Implication of tissue-specific phytohormone regulation

Huihui Liu, Chuanwei Yang and Lin Li*   

  1. State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200433, China
  • Received:2016-01-18 Accepted:2016-02-16 Online:2016-02-17 Published:2016-02-17
  • About author:*Correspondence: E-mail: linli@fudan.edu.cn

被引次数

10

摘要： The authors grow rice seedlings in simulated shade which mimic the seedlings grown in high density, and characterize the phenotype and global transcriptome changes. This work suggests that hormone inhibitors, such as PAC, can help form compact and sturdy seedlings without compromising growth in paddy fields.

Abstract:

A better understanding of shade avoidance syndrome (SAS) is an urgent need because of its effect on energy reallocation. Leverage-related mechanism in crops is of potential economic interest for agricultural applications. Here we report the SAS phenotype at tissue level rice seedlings. Tissue-specific RNA-sequencing indicates auxin plays different roles between coleoptile and the first leaf. Phenotypes of wild type treated by gibberellin and brassinosteroid biosynthesis inhibitors and of related mutants suggest these two hormones positively regulate SAS. Our work reveals the diversity of hormone responses in different organs and different species in shade conditions.

Key words: Auxin, BR, GA, rice seedlings, shade avoidance response

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