Regulation of leaf and fruit growth in plants growing in drying soil: exploitation of the plants' chemical signalling system and hydraulic architecture to increase the efficiency of water use in agriculture
Regulation of leaf and fruit growth in plants growing in drying soil: exploitation of the plants' chemical signalling system and hydraulic architecture to increase the efficiency of water use in agriculture
复制标题
DOI：
10.1093/jexbot/51.352.1949
复制
发表时间：
2000
影响因子：
6.9
通讯作者：
Davies;Bacon;Thompson;Sobeih;Rodríguez
中科院分区：
文献类型：
--
作者：
Davies;Bacon;Thompson;Sobeih;Rodríguez
从土壤中的供应可以导致地上部水分不足，这种反应将限制地上部的生长和功能。然而，地上部水分亏缺并不意味着生长在干燥土壤中的植物被认为是土壤干燥的结果，实际上在番茄商业开发的某些情况下，干旱诱导的气孔关闭可导致（Lycopersicon esculentum L.）和其他作物。最近，提出了关于部分根良好浇水植物的影响的发现，相对于该发现，枝水势增加（Jones等人，1983年）。根据这些干燥（PRD）在温室番茄生产的情况下，有必要问是什么限制了作物。这些研究结果表明如何理解重新开放的气孔（和芽的生长）？一些巧妙的实验操作已经允许水力结构可以解释观察到的增加，几个小组得出结论，水果质量中的化学信号，PRD对根和芽之间的植物的不同影响可以限制芽生长和活性和生殖生产以及在特定条件下的发病率功能。在一些开花的实验中。证据提供支持件，气动压力施加到PRD的成功可能在于的假设的根源，在干燥的土壤中的植物，使拍摄水的关系至少部分地，在相对的化学和水力是持续的值，是可比较的隔离的番茄果实。浇水充足的植物尽管如此，气孔可以保持部分关闭（Gollan等人，（1986）生长期：
supply from the soil can result in shoot water deficit and that this response will limit shoot growth and functioning In this paper the nature of root-to-shoot signals in ( Kramer, 1983). Nevertheless, shoot water deficits do not plants growing in drying soil is considered in the conalways result from soil drying and indeed in some circumtext of their commercial exploitation in tomato stances, drought-induced stomatal closure can result in (Lycopersicon esculentum L.) and other crops. Recent an increase in shoot water potential relative to that of a findings are presented on the effects of partial root well-watered plant (Jones et al., 1983). Under these drying (PRD) in the production of a glasshouse tomato circumstances it is necessary to ask what is limiting the crop. These findings show how an understanding of reopening of stomata (and the growth of the shoots)? both root-to-shoot signalling mechanisms and fruit Some ingenious experimental manipulations have allowed hydraulic architecture may explain observed increases several groups to conclude that chemical signalling in fruit quality, the differential effects of PRD on vegetbetween roots and shoots can limit shoot growth and ative and reproductive production and the incidence functioning under particular conditions. In some experiof blossom end rot. Evidence is provided to support ments, pneumatic pressure is applied to the roots of the hypothesis that the success of PRD may lie, at plants in drying soil such that the shoot water relations least in part, in the relative chemical and hydraulic are sustained at values that are comparable to those of isolation of the tomato fruit. well-watered plants. Despite this, stomata can remain partly closed (Gollan et al., 1986) and shoot growth can