克洛马暴露驱动的光合作用反应Pontederia crassipeses的可塑性
Bianca Jaqueline Santos Rodrigues1, Igor Alexander de Moura Silva2, Marcelo Dos Santos Silva1
1Department of Botany, Federal University of Pelotas (UFPel), C.P. 354, Pelotas, RS, 96160-000, Brazil.
Environmental science and pollution research international
|October 16, 2024
概括
庞特德里亚克拉西普斯马特. 通过利用较老的叶子进行光合作用,通过克洛马除草剂生存. 新的叶子会出现损伤,但成熟的叶子会保持生长和繁殖,确保植物在受污染的水生环境中生存.
科学领域:
- 环境毒理学环境毒理学
- 植物生理学 植物生理学
- 水生植物学 水生植物学
背景情况:
- 克洛马除草剂污染水生生态系统,对水生植物 (巨) 产生负面影响.
- 庞特德里亚克拉西普斯马特. 对克洛马表现出耐受性,在除草剂暴露下保持生长.
研究的目的:
- 为了研究Pontederia crassipes Mart背后的生理机制. 患者对克洛马的耐受性.
- 测试假设,老叶的光合作用可塑性支持在除草剂暴露期间的生长.
主要方法:
- 两项实验揭示了Pontederia crassipes Mart. 的存在. 对克洛马 (0.10.5毫克L-1) 和对照组.
- 在15天内评估视觉症状,叶绿素,颜料,光,气体交换,酶活性,碳水化合物,解剖学以及旧和新叶的生长.
主要成果:
- 克洛马诱导了新叶的化和口腔关闭,减少了CO2固定和碳水化合物合成.
- 较老的叶子没有受到影响,保持了光合作用活动,并支持了必不可少的代谢和生殖功能.
- 庞特德里亚克拉西普斯马特. 显示出显著的光合作用可塑性,旧的叶子维持了植物的持久性.
结论:
- 庞特迪利亚 (Pontederia crassipes) 的较老的叶子是马丁. 具有对克洛马的生理弹性.
- 预先存在的叶子中的光合作用可塑性对于植物在除草剂污染的环境中生存和繁殖至关重要.
- 这种机制使得Pontederia crassipes Mart. 尽管暴露于克洛马,但它仍然存在.
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