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Rice NARROW LEAF1 Regulates Leaf and Adventitious Root Development

Cited 22 time in Web of Science Cited 23 time in Scopus
Authors
Cho, Sung-Hwan; Yoo, Soo-Cheul; Zhang, Haitao; Lim, Jung-Hyun; Paek, Nam-Chon
Issue Date
2014-02-01
Publisher
Springer US
Citation
Plant Molecular Biology Reporter Vol.32 No.1, pp. 270-281
Keywords
농수해양Adventitious rootAuxin transportCROWN ROOTLESSNarrow leaf1Narrow leaf5Rice
Abstract
To improve our understanding of the molecular-genetic mechanisms governing leaf and root development in rice (Oryza sativa), we investigated narrow leaf1 (nal1), a pleiotropic mutant with short and narrow leaves, semi-dwarf stature, and fewer adventitious (or crown) roots. The narrow leaf5 (nal5) and nal1 mutants display similar defects in leaf and root development. Sequence analysis and complementation tests showed that nal5 is allelic to nal1. NAL1 encodes a putative trypsin-like serine/cysteine protease; the coding region of nal5 contains a missense mutation and nal1 harbors a 30-bp deletion. Quantitative real-time PCR revealed that nal1 mutants have altered expression levels of many OSHB, YABBY, and PIN-FORMED genes associated with leaf development and auxin transport. In addition, expression levels of CROWN ROOTLESS genes are markedly down-regulated in nal1. These results indicate that NAL1 functions in the regulation of both leaf and adventitious root development at the transcriptional level. Notably, exogenous auxin treatment rescued the reduced number of adventitious roots in nal1. Based on our results, we propose that NAL1 plays important roles in adventitious root development in rice.
ISSN
0735-9640 (print)
1572-9818 (online)
Language
English
URI
https://hdl.handle.net/10371/91404
DOI
https://doi.org/10.1007/s11105-013-0675-z
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College of Agriculture and Life Sciences (농업생명과학대학)Dept. of Plant Science (식물생산과학부)Journal Papers (저널논문_식물생산과학부)
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