Cellular Auxin Homeostasis: Gatekeeping Is Housekeeping
نویسندگان
چکیده
منابع مشابه
Arabidopsis IAR4 modulates auxin response by regulating auxin homeostasis.
In a screen for enhancers of tir1-1 auxin resistance, we identified two novel alleles of the putative mitochondrial pyruvate dehydrogenase E1alpha-subunit, IAA-Alanine Resistant4 (IAR4). In addition to enhancing the auxin response defects of tir1-1, iar4 single mutants exhibit numerous auxin-related phenotypes including auxin-resistant root growth and reduced lateral root development, as well a...
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Observations gained from model organisms are essential, yet it remains unclear to which degree they are applicable to distant relatives. For example, in the dicotyledon Arabidopsis thaliana (Arabidopsis), auxin biosynthesis via indole-3-pyruvic acid (IPA) is essential for root development and requires redundant TRYPTOPHAN AMINOTRANSFERASE OF ARABIDOPSIS 1 (TAA1) and TAA1-RELATED (TAR) genes. A ...
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Auxin is a crucial growth regulator in plants. However, a comprehensive understanding of how auxin induces cell expansion is perplexing, because auxin acts in a concentrationand cell type-dependent manner. Consequently, it is desirable to focus on certain cell types to exemplify the underlying growth mechanisms. On the other hand, plant tissues display supracellular growth (beyond the level of ...
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Auxin plays important roles during the entire life span of a plant. This small organic acid influences cell division, cell elongation and cell differentiation, and has great impact on the final shape and function of cells and tissues in all higher plants. Auxin metabolism is not well understood but recent discoveries, reviewed here, have started to shed light on the processes that regulate the ...
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The phytohormone auxin (principally indole-3-acetic acid [IAA]) is a key regulator of cell expansion and division that plays numerous roles in plant growth and development, including stem elongation, phototropic and gravitropic responses, apical dominance, and lateral and adventitious root formation. Auxin can stimulate or inhibit cell growth depending on its concentration and location within t...
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ژورنال
عنوان ژورنال: Molecular Plant
سال: 2012
ISSN: 1674-2052
DOI: 10.1093/mp/ssr109