Investigating the effects of elevated temperature on salinity tolerance traits in grapevine rootstocks using high-throughput phenotyping

IF 2.5 3区农林科学 Q3 FOOD SCIENCE & TECHNOLOGY

Australian Journal of Grape and Wine Research Pub Date : 2022-02-22 DOI:10.1111/ajgw.12549

J.D. Dunlevy, D.H. Blackmore, A. Betts, N. Jewell, C. Brien, B. Berger, R.R. Walker, E. J. Edwards, A.R. Walker

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引用次数: 3

Abstract

Background and Aims

Predicted impacts of climate change—increased temperature, decreased rainfall, and reduced water availability—are expected to increase irrigation-related salinity in Australia's major wine regions. Breeding of new abiotic stress-tolerant rootstocks will help to mitigate these effects on viticulture. Here, we investigated the impact of elevated temperature on key salt tolerance traits of two contrasting rootstocks and a population of experimental rootstock hybrids.

Methods and Results

A high-throughput facility was used to phenotype the rootstocks, K51-40, 140 Ruggeri and 68 K51-40 derived hybrids, all ungrafted, under factorial salinity and temperature treatments. Elevated temperature led to increased chloride concentration in the mature laminae of most genotypes, likely driven by increased transpiration, with large differences between genotypes in the extent of the temperature response. Genetic differences were also observed for the influence of temperature on laminae sodium accumulation. Growth rate response to salinity was variable between genotypes and was independent of laminae chloride and sodium accumulation.

Conclusions

High-throughput phenomics provides a promising tool to simultaneously assess new rootstock selections for ion exclusion and growth rate response under abiotic stresses.

Significance of the Study

Understanding the effect of temperature on salinity tolerance traits, and the development of novel screening tools, will help breed new rootstocks better suited to a hotter and drier future climate.

Abstract Image

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利用高通量表型分析研究高温对葡萄砧木耐盐性状的影响

气候变化的预测影响——温度升高、降雨减少和水资源可用性减少——预计将增加澳大利亚主要葡萄酒产区与灌溉相关的盐度。培育新的非生物抗逆性砧木将有助于减轻这些对葡萄栽培的影响。在此，我们研究了高温对两种对照砧木和一个实验砧木杂交群体关键耐盐性状的影响。方法与结果利用高通量设备对未嫁接的K51-40、140个Ruggeri和68个K51-40衍生杂种砧木进行了盐温因子处理的表型分析。温度升高导致大多数基因型成熟层中氯离子浓度升高，这可能是由蒸腾作用增加驱动的，不同基因型对温度响应的程度差异很大。温度对叶片钠积累的影响也存在遗传差异。生长速率对盐度的响应在基因型之间是不同的，并且与层氯和钠积累无关。结论高通量表型组学为同时评估新砧木在非生物胁迫下的离子排斥和生长速率响应提供了有前途的工具。研究的意义了解温度对耐盐性状的影响，开发新的筛选工具，将有助于培育出更适合未来炎热干燥气候的新砧木。

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来源期刊

Australian Journal of Grape and Wine Research 工程技术-食品科技

CiteScore

5.30

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： The Australian Journal of Grape and Wine Research provides a forum for the exchange of information about new and significant research in viticulture, oenology and related fields, and aims to promote these disciplines throughout the world. The Journal publishes results from original research in all areas of viticulture and oenology. This includes issues relating to wine, table and drying grape production; grapevine and rootstock biology, genetics, diseases and improvement; viticultural practices; juice and wine production technologies; vine and wine microbiology; quality effects of processing, packaging and inputs; wine chemistry; sensory science and consumer preferences; and environmental impacts of grape and wine production. Research related to other fermented or distilled beverages may also be considered. In addition to full-length research papers and review articles, short research or technical papers presenting new and highly topical information derived from a complete study (i.e. not preliminary data) may also be published. Special features and supplementary issues comprising the proceedings of workshops and conferences will appear periodically.