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- W1634957214 abstract "In maize, at least five auxin-binding proteins (ABPs) have been identified, yet their functions remain unclear. The present study reports the use of maize abp1, abp4, and abp1abp4 mutants to investigate the role of ABPs during maize growth and development. Single and double abp mutant plants grown in a greenhouse differ from the wild type (WT) in their leaf declination and leaf blade growth. The effect of the dark (D), blue light (BL), red light (RL), and exogenous auxin on the development of mutant seedlings was also studied. Relative to WT, etiolated mutant seedlings were shorter and showed a reduced responsiveness to exogenous auxin. In BL or RL, the responsiveness of maize seedlings to auxin was distinctly less than in D. The reducing effect of light on seedling responsiveness to auxin is mediated at least by phytochromes. The suppression of ABP1 and (or) ABP4 led to a distinct accumulation of free indole-3-acetic acid (IAA) in etiolated and light-grown seedling organs. We concluded that ABP1 and ABP4 participate in the growth of maize seedlings, mediate seedling responses to auxin, and interact with light signaling pathway(s). We also deduce a functional interaction between ABP1 and ABP4, which is that the relationship between them is light-, organ- and response-dependent." @default.
- W1634957214 created "2016-06-24" @default.
- W1634957214 creator A5006829630 @default.
- W1634957214 creator A5010526757 @default.
- W1634957214 creator A5014639924 @default.
- W1634957214 creator A5033539228 @default.
- W1634957214 creator A5044482200 @default.
- W1634957214 creator A5046101335 @default.
- W1634957214 creator A5052216184 @default.
- W1634957214 creator A5055719094 @default.
- W1634957214 date "2012-10-01" @default.
- W1634957214 modified "2023-10-17" @default.
- W1634957214 title "Maize<i>AUXIN-BINDING PROTEIN 1</i>and<i>AUXIN-BINDING PROTEIN 4</i>impact on leaf growth, elongation, and seedling responsiveness to auxin and light" @default.
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