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揭示了可可根基基因型,可用于缓解生物积累的潜在用途

Donald A Galvis^1,2, Yeirme Y Jaimes-Suárez¹, Jairo Rojas Molina¹

¹Centro de Investigación La Suiza, Corporación Colombiana de Investigación Agropecuaria (Agrosavia), Rionegro 250047, Colombia.

Plants (Basel, Switzerland)

|August 26, 2023

概括

可可豆中的 (Cd) 存在风险. 可可的基因型多样性提供了减少Cd积累的策略,IMC67和PA46显示出在芽中降低Cd水平的承诺.

科学领域:

农业科学农业科学
环境科学环境科学
植物生物学植物生物学

背景情况:

在可可豆 (Theobroma cacao) 中高 (Cd) 积累造成商业和健康问题.
了解可可的遗传多样性是缓解Cd吸收的关键.
粮食作物中的污染是全球面临的重大挑战.

研究的目的:

研究可可根茎的基因型和表型多样性,以减少豆中的积累.
评估不同暴露水平对可可生长和Cd度的影响.
为了确定可可基因型,提高了耐受性和减少了转位.

主要方法:

九种可可根茎基因型被暴露在0,6和12毫克·公斤-1的CdCl中90天.
测量了叶子,茎和根的含量,以及植物生长动态.
对每个基因型计算了耐受性指数和转位因子.

主要成果:

所有测试的可可基因型都表现出高耐受性 (耐受性指数≥60%).
EET61显示了最高的射击Cd度 (~270毫克·公斤DW-1),而PA46则是最低的 (~20毫克·公斤DW-1).
尽管一些基因型 (如P46) 的根性耐受性很高,但Cd转移到芽的情况很大,在芽中发现的Cd总量的高达80%.

结论:

可可根茎在积和转移方面存在显著的基因型变异.
像IMC67和PA46这样的特定基因型显示出开发可可品种的潜力,可可豆中的含量减少.
利用这种变化对于开发有效的策略来最大限度地减少可可生产中的污染至关重要.

关键词:

泰奥布罗玛可可可可的毒性的毒性重金属重金属的使用.物理疗法物理疗法物理疗法植物稳定剂植物稳定剂根茎根茎根茎根茎根茎

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