Countering elevated CO2 induced Fe and Zn reduction in Arabidopsis seeds.
Countering elevated CO2 induced Fe and Zn reduction in Arabidopsis seeds.
复制标题
对抗拟南芥种子中二氧化碳升高引起的铁和锌减少。
DOI：
10.1111/nph.18290
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Sun P
中科院分区：
文献类型：
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作者：
Sun P
生长在增加浓度的CO2诱导种子锌（Zn）和铁（Fe）的减少。利用拟南芥，我们研究了这是否可以通过减少CO2升高引起的蒸腾作用的减少来缓解。我们使用基于红外成像的筛选来分离编码α-碳酸酐7（ACA 7）的At 1g 08080突变体。aca 7突变等位基因显示对脱落酸（阿坝）和光的野生型（WT）反应，但在对CO2升高的反应中受到损害。当在1000 ppm CO2下生长时，它们表现出比WT更高的蒸腾作用和更高的种子Fe和Zn含量。我们的数据表明，通过增加蒸腾作用，有可能部分减轻在CO2升高时生长的种子Fe和Zn含量的降低。
Growth at increased concentrations of CO2induces a reduction in seed zinc (Zn) and iron (Fe). UsingArabidopsis thaliana, we investigated whether this could be mitigated by reducing the elevated CO2‐induced decrease in transpiration.We used an infrared imaging‐based screen to isolate mutants inAt1g08080that encodes ALPHA CARBONIC ANHYDRASE 7 (ACA7).aca7mutant alleles display wild‐type (WT) responses to abscisic acid (ABA) and light but are compromised in their response to elevated CO2.ACA7is expressed in guard cells. Whenaca7mutants are grown at 1000 ppm CO2they exhibit higher transpiration and higher seed Fe and Zn content than WT grown under the same conditions.Our data show that by increasing transpiration it is possible to partially mitigate the reduction in seed Fe and Zn content whenArabidopsisis grown at elevated CO2.