RRC ID 32265
Author Shinozaki Y, Tanaka T, Ogiwara I, Kanekatsu M, van Doorn WG, Yamada T.
Title Expression of an AtNAP gene homolog in senescing morning glory (Ipomoea nil) petals of two cultivars with a different flower life span.
Journal J. Plant Physiol.
Abstract AtNAP, a NAC family transcription factor, has been shown to promote leaf senescence in Arabidopsis. We isolated an AtNAP homolog in morning glory (Ipomoea nil), designated InNAP, and investigated its expression during petal senescence. We used two cultivars, one showing a normal short flower life span (cv. Peking Tendan) and another a longer life span (cv. Violet). InNAP was highly expressed in both cultivars. Expression was high before that of the senescence marker gene InSAG12. InNAP and InSAG12 expression was high in cv. Peking Tendan before cv. Violet. The expression of both genes was therefore temporally related to the onset of the visible senescence symptoms. An inhibitor of ethylene action (silver thiosulphate, STS) delayed petal senescence in cv. Peking Tendan but had no effect in cv. Violet. STS treatment had no clear effect on the InNAP expression in petals of both cultivars, suggesting that endogenous ethylene may not be necessary for its induction. These data suggest the hypothesis that InNAP plays a role in petal senescence, independent of the role of endogenous ethylene.
Volume 171(8)
Pages 633-8
Published 2014-5-1
DOI 10.1016/j.jplph.2014.01.008
PII S0176-1617(14)00032-7
PMID 24709156
MeSH Amino Acid Sequence Flowers / genetics Flowers / growth & development Flowers / metabolism Gene Expression Regulation, Plant* Ipomoea nil / genetics* Ipomoea nil / growth & development* Ipomoea nil / metabolism Molecular Sequence Data Phylogeny Plant Proteins / genetics* Plant Proteins / metabolism Sequence Alignment
IF 2.825
Times Cited 4
Morning Glory Q0061 (北京天壇)