Transcriptome changes in the cambial region of poplar (Populus alba L.) in response to water deficit.
作者： M. Berta , A. Giovannelli , F. Sebastiani , A. Camussi , M. L. Racchi
DOI: 10.1111/J.1438-8677.2009.00320.X
关键词: Woody plant 、 Botany 、 Plant physiology 、 Transcriptome 、 Stomatal conductance 、 Vascular cambium 、 Photosynthesis 、 Cell wall 、 Biology 、 Cambium
摘要: A transcriptome analysis of the Populus alba cambial region was performed with aim elucidating gene network underlying response to water deficit within cambium and differentiating derivative cells. Water stress induced in 1-year-old P. plants by withholding for 9 days. At that time, leaf predawn potential fell -0.8 MPa, resulting a significant reduction stomatal conductance, CO(2) assimilation consistent increment stem shrinkage. These effects were almost fully reversed re-hydration. The resulted changes expression affected several functional categories, such as protein metabolism, cell wall response, transporters transcriptional regulation. function up- down-regulated genes is discussed considering physiological deficit.
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