Photosynthetic physiological response of Radix Isatidis (Isatis indigotica Fort.) seedlings to nicosulfuron.
Photosynthetic physiological response of Radix Isatidis (Isatis indigotica Fort.) seedlings to nicosulfuron.
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DOI：
10.1371/journal.pone.0105310
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Guo P
中科院分区：
文献类型：
--
作者：
Yuan X;Zhang L;Ning N;Wen Y;Dong S;Yin M;Guo M;Wang B;Feng L;Guo P
板蓝根（Isatis indigotica Fort.）是最重要的传统中药植物之一。然而，目前还没有合适的除草剂用于板蓝根田苗后杂草的防除。探讨磺酰脲类除草剂烟嘧磺隆对板蓝根的安全性。以烟嘧磺隆处理后第5叶期的板蓝根幼苗为试材，分析了烟嘧磺隆处理后10 d板蓝根幼苗的生物量、叶面积、光合色素含量、光合速率、叶绿素荧光特性和P700参数等光合生理指标的变化，以及板蓝根幼苗对除草剂的光合生理响应。结果表明，随着除草剂浓度的增加，生物量、总叶绿素、叶绿素a和类胡萝卜素含量、光合速率、气孔导度、PS Ⅱ最大量子效率、PS Ⅱ有效量子效率、PS Ⅱ电子传递速率、光化学猝灭、最大P700变化、PS Ⅰ光化学量子效率和PS Ⅰ电子传递速率均降低，而初始荧光、PS Ⅱ中非调节能量耗散的量子产额和PS Ⅰ中受体侧限制引起的非光化学能量耗散的量子产额增加。说明烟嘧磺隆≥1 mg L-1时，叶绿体、PS Ⅱ和PS Ⅰ结构均受到损伤。PS I受体侧的电子传递受限，暗反应过程受阻可能是板蓝根幼苗生长受到明显抑制，光合速率下降的主要原因。
Radix Isatidis (Isatis indigotica Fort.) is one of the most important traditional Chinese medicine plants. However, there is no suitable herbicide used for weed control in Radix Isatidis field during postemergence stage. To explore the safety of sulfonylurea herbicide nicosulfuron on Radix Isatidis (Isatis indigotica Fort.) seedlings and the photosynthetic physiological response of the plant to the herbicide, biological mass, leaf area, photosynthetic pigment content, photosynthetic rate, chlorophyll fluorescence characteristics, and P700 parameters of Radix Isatidis seedlings were analyzed 10 d after nicosulfuron treatment at 5th leaf stage in this greenhouse research. The results showed that biological mass, total chlorophyll, chlorophyll a, and carotenoids content, photosynthetic rate, stomatal conductance, PS II maximum quantum yield, PS II effective quantum yield, PS II electron transport rate, photochemical quenching, maximal P700 change, photochemical quantum yield of PS I, and PS I electron transport rate decreased with increasing herbicide concentrations, whereas initial fluorescence, quantum yield of non-regulated energy dissipation in PS II and quantum yield of non-photochemical energy dissipation due to acceptor side limitation in PS I increased. It suggests that nicosulfuron ≥1 mg L−1 causes the damage of chloroplast, PS II and PS I structure. Electron transport limitations in PS I receptor side, and blocked dark reaction process may be the main cause of the significantly inhibited growth and decreased photosynthetic rate of Radix Isatidis seedlings.
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影响因子：
2.5
作者：
Gallaher, K;Mueller, TC;Barrett, M
通讯作者：
Barrett, M
影响因子：
4.3
作者：
Murata, Norio;Takahashi, Shunichi;Allakhverdiev, Suleyman I.
通讯作者：
Allakhverdiev, Suleyman I.
影响因子：
2.5
作者：
Nordby, Jonathan N.;Williams, Martin M., II;Lutz, Joseph D.
通讯作者：
Lutz, Joseph D.
DOI：
10.1016/s0005-2728(89)80347-0
发表时间：
1989-08-03
期刊：
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子：
--
作者：
PORRA, RJ;THOMPSON, WA;KRIEDEMANN, PE
通讯作者：
KRIEDEMANN, PE
除草剂咪草烟对拟南芥抗氧化系统和淀粉代谢反应的对映选择性植物毒性
影响因子：
3.7
作者：
Qian H;Lu T;Peng X;Han X;Fu Z;Liu W
通讯作者：
Liu W