The bHLH Transcription Factor SPATULA Controls Final Leaf Size in Arabidopsis thaliana
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چکیده
منابع مشابه
The bHLH transcription factor SPATULA is a key regulator of organ size in Arabidopsis thaliana
Plant organ size and thus plant size is determined by both cell proliferation and cell expansion. The bHLH transcription factor SPATULA (SPT) was originally identified as a regulator of carpel patterning. It has subsequently been found to control growth of the organs of the shoot. It does this at least in part by controlling the size of meristematic regions of organs in parallel to gibberellic ...
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Iron (Fe) deficiency is a limiting factor for the normal growth and development of plants, and many species have evolved sophisticated systems for adaptation to Fe-deficient environments. It is still unclear how plants sense Fe status and coordinate the expression of genes responsive to Fe deficiency. In this study, we show that the bHLH transcription factor bHLH115 is a positive regulator of t...
متن کاملSPATULA, a gene that controls development of carpel margin tissues in Arabidopsis, encodes a bHLH protein.
Studies involving mutants of the gene SPATULA indicate that it promotes the growth of carpel margins and of pollen tract tissues derived from them. We show that it encodes a new member of the basic-helix-loop-helix family of transcription factors. SPATULA is expressed in marginal and pollen tract tissues throughout their development confirming its role in regulating their growth. It is also exp...
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In Arabidopsis, APETALA1, PISTILLATA, APETALA3 and SEPALLATA interact to form multimeric protein complexes required to specify petal identity. However, the downstream events that lead to petal specific shape and size remain largely unknown. Organ final size can be influenced by cell number or cell expansion or both. To date, no gene that specifically limits petal size by controlling postmitotic...
متن کاملThe study of a SPATULA-like bHLH transcription factor expressed during peach (Prunus persica) fruit development.
Extensive studies on the dry fruits of the model plant arabidopsis (Arabidopsis thaliana) have revealed various gene regulators of the development and dehiscence of the siliques. Peach pericarp is analogous to the valve tissues of the arabidopsis siliques. The stone (otherwise called pit) in drupes is formed through lignification of the fruit endocarp. The lignified endocarp in peach can be sus...
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ژورنال
عنوان ژورنال: Plant and Cell Physiology
سال: 2009
ISSN: 1471-9053,0032-0781
DOI: 10.1093/pcp/pcp184