NDLI: Expressional diversity of wheat nsLTP genes: evidence of subfunctionalization via cis-regulatory divergence

Content Provider	Springer Nature Link
Author	Wang, Hong Wei Kwon, Hyuk Jin Yim, Won Cheol Lim, Sung Don Moon, Jun Cheol Lee, Byung Moo Seo, Yong Weon Kim, Wook Jang, Cheol Seong
Copyright Year	2010
Abstract	Previously, the wheat non-specific lipid transfer proteins (TaLTP), members of a small multigene family, were reported to evidence a complex pattern of expression regulation. In order to assess further the expression diversity of the TaLTP genes, we have attempted to evaluate their expression profiles in responses to abiotic stresses, using semi-quantitative RT-PCR. The expression profiles generated herein revealed that the TaLTP genes in group A evidenced highly similar responses against abiotic stresses, whereas differential expression patterns among genes in each group were also observed. A total of seven promoters were fused to a GUS reporter gene and the recombinants were introduced into Arabidopsis, while three promoters evidenced non-detectible GUS activity. The promoters of TaLTP1, TaLTP7, and TaLTP10 included in group A drove strong expressions during plant development with overlapping patterns, in large part, but also exhibited distinct expression pattern, thereby suggesting subfunctionalization processing over evolutionary time. However, only trace expression in cotyledons, young emerged leaves, and epidermal cell layers of flower ovaries was driven by the promoter of TaLTP3 of group B. These results indicate that their distinct physiological functions appear to be accomplished by a subfunctionalization process involving degenerative mutations in regulatory regions.
Starting Page	843
Ending Page	852
Page Count	10
File Format	PDF
ISSN	00166707
Journal	Genetica
Volume Number	138
Issue Number	8
e-ISSN	15736857
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-06-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	cis-element Evolution Gene family Non-specific lipid transfer protein Subfunctionalization Microbial Genetics and Genomics Human Genetics Plant Genetics & Genomics Animal Genetics and Genomics Life Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Animal Science and Zoology Insect Science

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