Document Detail

Rice develop wavy seminal roots in response to light stimulus.
MedLine Citation:
PMID:  21573806     Owner:  NLM     Status:  Publisher    
Rice (Oryza sativa L.) seminal roots are the primary roots to emerge from germinated seeds. Here, we demonstrate that the photomorphology of the seminal roots was diverse among rice varieties, and the light-induced wavy roots were found mostly in indica-type rice varieties. The light-induced wavy morphology in rice seminal roots has been different with curling or coiling roots in some other specific conditions, such as high air humidity or high nitrogen nutrient. The efficiency of light-induced root waving was developmental stage dependent. The wavy root phenotype was caused by asymmetric cell growth around the stele. Using the inhibitors to block auxin polar transport and fatty acid oxygenation, the role of auxin and oxylipins in the morphogenesis of light-induced wavy roots was investigated. Expressions of genes encoded in the enzymes involved in fatty acid oxygenation in light-exposed roots were monitored by reverse transcriptase-polymerase chain reaction. Our results suggested that auxin polar transport was essential for inducing wavy seminal roots by light stimulus. In addition, the ketol oxylipins derived from allene oxide synthase (EC fatty acid oxygenation function as intracellular signals for triggering the light-induced wavy root phenotype.
Shu-Jen Wang; Chia-Hsun Ho; Hsiang-Wen Chen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-5-15
Journal Detail:
Title:  Plant cell reports     Volume:  -     ISSN:  1432-203X     ISO Abbreviation:  -     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-5-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9880970     Medline TA:  Plant Cell Rep     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Agronomy, National Taiwan University, No. 1, Section 4, Roosevelt Rd., Taipei, 106, Taiwan,
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