文献类型： 外文期刊

作者： Liu, Jiajun ¹ ; Shi, Xi'an ¹ ; Zhong, Tianhui ¹ ; Jie, Wanrong ¹ ; Xu, Ruihan ¹ ; Ding, Yanfeng ¹ ; Ding, Chengqiang ¹ ;

作者机构： 1.Nanjing Agr Univ, Coll Agr, 1 Weigang, Nanjing 210095, Peoples R China

2.Jiangxi Acad Agr Sci, Rice Res Inst, 602 Nanlian Rd, Nanchang 330200, Peoples R China

3.Minist Agr, Key Lab Crop Physiol Ecol & Prod Management, 1 Weigang, Nanjing 210095, Peoples R China

4.Nanjing Agr Univ, Collaborat Innovat Ctr Modern Crop Prod Cosponsore, 1 Weigang, Nanjing 210095, Peoples R China

关键词： Auxin; Leaf morphogenesis; OsPID; OsPIN1c; OsPIN1d; Rice

期刊名称：PLANT AND CELL PHYSIOLOGY （ 影响因子：4.9； 五年影响因子：5.7 ）

ISSN： 0032-0781

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Auxin plays an essential role in modulating leaf development. However, its role in leaf development in rice (Oryza sativa L.) remains largely unknown. In this study, we found that PINOID (OsPID) and two Sister-of-PIN1s, termed PIN-FORMED1c (OsPIN1c) and OsPIN1d, are necessary for rice leaf development. The ospin1c ospin1d null mutant lines presented severe defects in leaf morphogenesis, including drooping and semi-drooping blades, an abnormally thickened sheath and lamina joint, and fused leaves with absent ligules and auricles. Loss-of-function ospid mutants displayed generally similar leaf morphology but lacked leaf fusion. Interestingly, misshaped leaf genesis displayed a preference for being ipsilateral. In addition, OsPIN1c and OsPID were commonly localized in the initiating leaf primordia. Furthermore, accompanied by the more severe organ morphogenesis in the ospin1c ospin1d ospid triple mutant, RNA sequencing analysis revealed that many genes essential for leaf development have an altered expression level. Together, this study furthers our understanding of the role auxin transport plays during leaf development in monocot rice.