The resurrection plant Sporobolus stapfianus: An unlikely model for engineering enhanced plant biomass?
The resurrection plant Sporobolus stapfianus: An unlikely model for engineering enhanced plant biomass?
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DOI：
10.1007/s10725-010-9485-6
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发表时间：
2010-12-01
影响因子：
4.2
通讯作者：
Neale, Alan D.
中科院分区：
文献类型：
--
作者：
Blomstedt, Cecilia K.;Griffiths, Cara A.;Neale, Alan D.
复活草Sporobolus stapfianus Gandoger可以从长时间的干燥状态（水势平衡到2%相对湿度）中快速恢复（Gaff和Ellis，Bothalia 11：305-308 1974; Gaff和Loveys，Transactions of the Malaysian Society of Plant Physiology 3：286-287 1993）。生理研究已在S。stapfianus来研究这些耐旱植物科普严重缺水的反应。在许多情况下，最近的基因表达分析在S。stapfianus揭示了介导这些反应的分子和细胞机制。S. stapfianus是研究营养草组织中的脱水耐受性的多功能研究工具，其具有几个用于区分植物中存在的脱水耐受性适应基因与许多脱水响应基因的有用特征。与脱水S. stapfianus已成功地用于增强模式植物以及重要作物物种耐旱性和耐盐性。除了脱水和再水化成功的能力，复活植物在经历短暂的零星降雨事件的地区的生存可能在很大程度上取决于紧密下调细胞分裂和细胞壁松动活动的能力，随着水的可用性降低，然后在降雨后迅速生长，而水是丰富的。因此，对复活植物干燥组织中存在的基因转录本的分析可能揭示重要的生长相关基因。最近的研究结果支持的命题，以及作为一个通用的模型，设计策略，保护植物水分流失，复活植物可能是一个非常有用的工具，精确定位基因，以提高生长速度和生物量生产的目标。
The resurrection grass Sporobolus stapfianus Gandoger can rapidly recover from extended periods of time in the desiccated state (water potential equilibrated to 2% relative humidity) (Gaff and Ellis, Bothalia 11:305-308 1974; Gaff and Loveys, Transactions of the Malaysian Society of Plant Physiology 3:286-287 1993). Physiological studies have been conducted in S. stapfianus to investigate the responses utilised by these desiccation-tolerant plants to cope with severe water-deficit. In a number of instances, more recent gene expression analyses in S. stapfianus have shed light on the molecular and cellular mechanisms mediating these responses. S. stapfianus is a versatile research tool for investigating desiccation-tolerance in vegetative grass tissue, with several useful characteristics for differentiating desiccation-tolerance adaptive genes from the many dehydration-responsive genes present in plants. A number of genes orthologous to those isolated from dehydrating S. stapfianus have been successfully used to enhance drought and salt tolerance in model plants as well as important crop species. In addition to the ability to desiccate and rehydrate successfully, the survival of resurrection plants in regions experiencing short sporadic rainfall events may depend substantially on the ability to tightly down-regulate cell division and cell wall loosening activities with decreasing water availability and then grow rapidly after rainfall while water is plentiful. Hence, an analysis of gene transcripts present in the desiccated tissue of resurrection plants may reveal important growth-related genes. Recent findings support the proposition that, as well as being a versatile model for devising strategies for protecting plants from water-loss, resurrection plants may be a very useful tool for pinpointing genes to target for enhancing growth rate and biomass production.