| Comprehensive hormone profiling in developing Arabidopsis seeds: examination of the site of ABA biosynthesis, ABA transport and hormone interactions. | |
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MedLine Citation:
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PMID: 20959378 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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ABA plays important roles in many aspects of seed development, including accumulation of storage compounds, acquisition of desiccation tolerance, induction of seed dormancy and suppression of precocious germination. Quantification of ABA in the F(1) and F(2) populations originated from crosses between the wild type and an ABA-deficient mutant aba2-2 demonstrated that ABA was synthesized in both maternal and zygotic tissues during seed development. In the absence of zygotic ABA, ABA synthesized in maternal tissues was translocated into the embryos and partially induced seed dormancy. We also analyzed the levels of ABA metabolites, gibberellins, IAA, cytokinins, jasmonates and salicylic acid (SA) in the developing seeds of the wild type and aba2-2. ABA metabolites accumulated differentially in the silique and seed tissues during development. Endogenous levels of SA were elevated in aba2-2 in the later developmental stages, whereas that of IAA was reduced compared with the wild type. These data suggest that ABA metabolism depends on developmental stages and tissues, and that ABA interacts with other hormones to regulate seed developmental processes. |
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Authors:
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Yuri Kanno; Yusuke Jikumaru; Atsushi Hanada; Eiji Nambara; Suzanne R Abrams; Yuji Kamiya; Mitsunori Seo |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-10-19 |
Journal Detail:
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Title: Plant & cell physiology Volume: 51 ISSN: 1471-9053 ISO Abbreviation: Plant Cell Physiol. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-08 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9430925 Medline TA: Plant Cell Physiol Country: Japan |
Other Details:
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Languages: eng Pagination: 1988-2001 Citation Subset: IM |
Affiliation:
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RIKEN Plant Science Center, Yokohama, Kanagawa, 230-0045 Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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