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Simple yet stringent screening methodologies for evaluation of putative transformants for abiotic stress tolerance: salt and cadmium stress as a paradigm

机译:简单而严格的筛选方法用于评估假定的转化子对非生物胁迫的耐受性:盐和镉胁迫为范例

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摘要

Rigorous and stringent screening methodologies to select transformants at both seedling and plant level under cadmium or NaCl stress were developed. At seedling level, two screening strategies were standardized. One involved germination on filter paper/agar in the presence of either CdCl2 (125 μM) or NaCl (350–450 mM) for 9 days and selection of tolerant putative transformants. The other involved germination of the seedlings on soilrite by irrigation of 450 mM NaCl. Further, at plant level, in vitro evaluation for stress tolerance involved a simple leaf senescence bioassay. Combination of the seedling and plant level screening strategies would result in the initial identification of promising transformants for further analysis.
机译:建立了严格和严格的筛选方法,以选择镉或NaCl胁迫下的幼苗和植物水平的转化子。在苗期,标准化了两种筛选策略。一种方法是在CdCl2(125μM)或NaCl(350-450 mM)存在下在滤纸/琼脂上萌发9天,然后选择耐受的推定转化子。另一个涉及通过灌溉450 mM NaCl在土壤土上发芽的种子。此外,在植物水平上,体外抗逆性评估涉及简单的叶片衰老生物测定。结合幼苗水平和植物水平筛选策略将初步鉴定出有希望的转化子,以供进一步分析。

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