16121290

Source:http://linkedlifedata.com/resource/pubmed/id/16121290

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0007589, umls-concept:C0038817, umls-concept:C0242724, umls-concept:C1154971, umls-concept:C1511938
pubmed:issue	9
pubmed:dateCreated	2005-8-25
pubmed:abstractText	Leaf shape is an important factor in optimal plant growth, because leaves are the main photosynthetic organs. Plants exhibit plasticity in leaf shape and structure, allowing them to optimize photosynthetic efficiency. In Arabidopsis thaliana(L.) Heynh., several types of leaves develop differentially, according to light intensity and quality. When shaded, the expansion of leaf lamina is inhibited, while the petiole elongation is enhanced. This phenomenon is part of the so-called shade-avoidance syndrome. Under low light, A. thaliana develops shade leaves with only one layer of palisade tissue, whereas under high light, it develops sun leaves that have nearly two complete layers of palisade tissue. Although the molecular mechanisms of these photomorphogenic phenomena in leaves are not well understood, recent studies of A. thaliana have provided some insight. For example, some cytochrome P450s may be involved in the specific control of the petiole length during photomorphogenesis. On the other hand, switching between sun and shade leaves is regulated by long-distance signaling from mature leaves in Chenopodium album. Here we provide an overview of the mechanisms of photomorphogenesis in leaves based on recent findings.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/101124451
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Sep
pubmed:issn	1474-905X
pubmed:author	pubmed-author:KimGyung-TaeGT, pubmed-author:KozukaToshiakiT, pubmed-author:TsukayaHirokazuH, pubmed-author:YanoSatoshiS
pubmed:issnType	Print
pubmed:volume	4
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	770-4
pubmed:dateRevised	2006-11-15
pubmed:meshHeading	pubmed-meshheading:16121290-Arabidopsis, pubmed-meshheading:16121290-Gene Expression Regulation, Plant, pubmed-meshheading:16121290-Light, pubmed-meshheading:16121290-Plant Leaves, pubmed-meshheading:16121290-Signal Transduction
pubmed:year	2005
pubmed:articleTitle	Photomorphogenesis of leaves: shade-avoidance and differentiation of sun and shade leaves.
pubmed:affiliation	Faculty of Plant Biotechnology, Dong-A University, Pusan 604-714, Korea.
pubmed:publicationType	Journal Article, Review, Research Support, Non-U.S. Gov't