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Intra and Inter-specific Variability of Salt Tolerance Mechanisms in Diospyros Genus.
Frontiers in Plant Science ( IF 4.1 ) Pub Date : 2020-07-13 , DOI: 10.3389/fpls.2020.01132
Francisco Gil-Muñoz 1 , Juan Gabriel Pérez-Pérez 2 , Ana Quiñones 1 , María Del Mar Naval 1 , María Luisa Badenes 1
Affiliation  

Saline stress is one of most important problems that agriculture must face in the context of climate change. In the Mediterranean basin, one of the regions most affected, persimmon production can be compromised by this effect, due to the limited availability of salt tolerant rootstocks. Seedlings coming from four populations from the Diospyros genus have been exposed to salt stress in order to identify salt tolerance genotypes within these populations. Morphological, physiological, and transcriptomic approaches have revealed different mechanisms of tolerance among the population studied. An HKT1-like gene has been shown to have different root expression related to the salt tolerance phenotypes among and within populations. Additionally, we have observed differences in salt-responsive expression among PIP aquaporin genes. Genetic variability for salt tolerance can be generated in Diospyros species through crossings and used for overcome salt stress. Furthermore, differences in water use efficiency (WUE) have been obtained between and within populations. The information gathered at transcriptomic and physiological level demonstrated natural and heritable variability among Diospyros genus which is the key for salt-tolerant rootstock breeding programs.



中文翻译:

柿属植物耐盐机理的种内和种间变异性。

盐胁迫是农业在气候变化背景下必须面对的最重要问题之一。在地中海盆地(受影响最严重的地区之一)中,由于耐盐根茎的供应有限,柿子的产量可能会受到影响。来自四个种群的幼苗柿属为了鉴定这些种群中的耐盐基因型,该属已经暴露于盐胁迫。形态学,生理学和转录组学方法揭示了所研究人群的不同耐受机制。一个类HKT1该基因已显示出与种群之间和种群内的耐盐性表型相关的根表达不同。此外,我们已经观察到盐反应表达之间的差异画中画水通道蛋白基因。可以通过杂交在薯through属植物中产生耐盐性的遗传变异性,并用于克服盐胁迫。此外,已经在人群之间和人群内部获得了水利用效率(WUE)的差异。在转录组和生理学水平上收集到的信息显示出自然和遗传变异柿属 属是耐盐砧木育种计划的关键。

更新日期:2020-08-08
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