Physcomitrium patens response to elevated CO2 is flexible and determined by an interaction between sugar and nitrogen availability

IF 8.1 1区生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2023-11-06 DOI:10.1111/nph.19348

Boominathan Mohanasundaram, Somnath Koley, Doug K. Allen, Sona Pandey

引用次数: 0

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Physcomitrium patens对升高的CO2的反应是灵活的，并由糖和氮的有效性之间的相互作用决定。

苔藓在植物进化中占有独特的地位，对保护永久冻土和沼泽等自然长期碳储存系统至关重要。由于体型较小，苔藓生长在靠近土壤表面的地方，并暴露在土壤呼吸产生的高水平二氧化碳中。然而，二氧化碳（eCO2）水平升高对苔藓的影响仍然没有得到充分的研究。我们确定了苔藓Physcomitrium patens在不同氮水平下对eCO2的生长反应，并表征了潜在的生理和代谢变化。三个不同的生长特征，即向茎状茎的早期过渡、较长、高度着色的根瘤的发育和生物量的增加，定义了P.patens对eCO2的表型反应。升高的二氧化碳通过提高糖信号代谢产物T6P的水平来影响生长。氮源的数量和形式影响这些代谢和表型变化。在eCO2下，P.patens在硝酸盐存在下表现出扩散生长模式，但补充铵会导致高配子体的密集生长，在不同环境下表现出高表型可塑性。这些结果为比较P.patens与其他植物群的eCO2反应提供了一个框架，并为苔藓生长提供了重要的见解，这可能有利于气候变化模型。

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来源期刊

New Phytologist 生物-植物科学

自引率

5.30%

发文量

728

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