1999 Fiscal Year Final Research Report Summary
Molecular analysis of plant homeostasis
| Project/Area Number |
09460003
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Breeding science
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| Research Institution | The University of Tokyo |
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Principal Investigator |
UCHIMIYA Hirofumi Institute of Molecular and Cellular Biosciences, Professor, 分子細胞生物学研究所, 教授 (50142229)
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| Project Period (FY) |
1997 – 1999
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| Keywords | homeostasis / cold / drought / salinity / anoxia / rice / breeding / melabolic path way |
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| Research Abstract |
A number of abnormal environment parameters such as drought, salinity, freezing, high temperature, anoxia, high light intensity and nutrient imbalances etc. are collectively termed as abiotic stresses.
Abiotic stresses lead to dehydration or osmotic stress through reduced availability of water for vital cellular functions and maintenance of turgor pressure. Plants have evolved mechanisms to respond to various abiotic stresses at morphological, anatomical, cellular and molecular levels.
Some responses to tolerance or adjustment are highly species specific whereas others are fairly common even among plants belonging to different families and orders, microorganisms and animals. In response to dehydration or osmotic stress a series of compatible osmolytes are accumulated for osmotic adjustment, water retention and free radical scavenging. Attempts have been made to understand the molecular basis of tolerance to certain abiotic stresses. We have carried out extensive studies on the molecular mechanism related to the homeostasis in higher plants to understand the basis of stress tolerance. The outcome of such research was presented in the form of publications and other means
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