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Transcriptional profiling reveals adaptive responses to boron deficiency stress in arabidopsis

文献类型： 外文期刊

作者： Peng, Lishun 1 ; Zeng, Changying 3 ; Shi, Lei 1 ; Cai, Hongmei 1 ; Xu, Fangsen 1 ;

作者机构： 1.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Peoples R China

2.Huazhong Agr Univ, Microelement Res Ctr, Wuhan 430070, Peoples R China

3.CATAS, State Key Lab Trop Crop Biotechnol, ITBB, Haikou 571101, Peoples R China

关键词： Arabidopsis;Boron deficiency stress;Transcriptional profiling

期刊名称：ZEITSCHRIFT FUR NATURFORSCHUNG SECTION C-A JOURNAL OF BIOSCIENCES （ 影响因子：1.649； 五年影响因子：1.66 ）

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收录情况： SCI

摘要： Boron (B) is a micronutrient for vascular plants, and B deficiency has been recognized as a limiting factor for crop production in many areas worldwide. To gain a better insight into the adaptability mechanism of plant responses to B starvation, an Arabidopsis whole genome Affymetrix GeneChip was used to evaluate global gene expression alterations in response to short- and long-term B deficiency stress. A large number of B deficiency-responsive genes were identified and grouped by their functions. Genes linked to jasmonic acid (JA) showed the most prominent response under B deficiency. The transcripts for biosynthesis and regulation of JA were constantly induced during short- and long-term B deficiency stress. A set of well-known JA-dependent process and responsive genes showed the same expression profile. This suggested that JA could be a pivotal player in the integration of adaptive responses to B deficiency stress. Moreover, other functional groups of B deficiency-responsive genes (including various encoding the biosynthesis of antioxidants, the basic components of Ca2+ signalling, protein kinases, cell wall-modifying enzymes and proteins, H+-ATPase, K+ transporters, and a set of enzymes involved in central metabolism and cellular growth) were also observed, and their physiological roles under B deficiency stress are discussed. These results provide some information for a better understanding of plant-adaptive responses to B deficiency stress and potential strategies to improve B efficiency in crops.

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