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首页> 外文期刊>Chemosphere >Physiological responses of glyphosate-resistant and glyphosate-sensitive soybean to aminomethylphosphonic acid, a metabolite of glyphosate
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Physiological responses of glyphosate-resistant and glyphosate-sensitive soybean to aminomethylphosphonic acid, a metabolite of glyphosate

机译：抗草甘膦和对草甘膦敏感的大豆对氨基甲基膦酸（草甘膦的代谢产物）的生理反应

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摘要

Aminomethylphosphonic acid (AMPA) is formed in glyphosate-treated glyphosate-resistant (GR) and gly phosate-sensitive (GS) soybean [Glycine max (L.) Merr.] plants and is known to cause yellowing in soy bean. Although, AMPA is less phytotoxic than glyphosate, its mode of action is different from that of glyphosate and is still unknown. Greenhouse studies were conducted at Stoneville, MS to determine the effects of AMPA on plant growth, chlorophyll content, photosynthesis, nodulation, nitrogenase activ ity, nitrate reductase activity, and shoot nitrogen content in GR and GS soybeans. AMPA was applied to one- to two-trifoliolate leaf stage soybeans at 0.1 and 1.0 kg ha"1, representing a scenario of 10% and 100% degradation of glyphosate (1.0 kg ae ha"1 use rate) to AMPA, respectively. Overall, AMPA effects were more pronounced at 1.0 kg ha"1 than at 0.1 kg ha"1 rate. Visual plant injury (18-27%) was observed on young leaves within 3 d after treatment (DAT) with AMPA at the higher rate regardless of soybean type. AMPA injury peaked to 46-49% at 14 DAT and decreased to 17-18% by 28 DAT, in both soybean types. AMPA reduced the chlorophyll content by 37%, 48%, 66%, and 23% in GR soybean, and 17%, 48%, 57%, and 22% in GS soybean at 3, 7,14, and 28 DAT, respectively. AMPA reduced the photosynthesis rate by 65%, 85%, and 77% in GR soybean and 59%, 88%, and 69% in GS soybean at 3, 7, and 14 DAT, respec tively, compared to non-treated plants. Similarly, AMPA reduced stomatal conductance to water vapor and transpiration rates at 3, 7, and 14 DAT compared to non-treated plants in both soybean types. Pho tosynthesis rate, stomatal conductance, and transpiration rate recovered to the levels of non-treated plants by 28 DAT. Plant height and shoot dry weight at 28 DAT; nodulation, nitrogenase activity at 10 DAT, and nitrate reductase activity at 3 and 14 DAT were unaffected by AMPA. AMPA reduced root res piration and shoot nitrogen content at 10 DAT. These results suggest that a foliar application of AMPA could indirectly reduce photosynthesis through decreased chlorophyll content in GR and GS soybean up to 14 DAT, but affected plants can recover to normal growth by 28 DAT.
机译：氨基甲基膦酸（AMPA）在抗草甘膦的草甘膦（GR）和对草甘膦敏感的（GS）大豆[Glycine max（L.）Merr。]植物中形成，已知会导致大豆变黄。尽管AMPA的植物毒性不如草甘膦，但其作用方式与草甘膦不同，目前仍未知。在密苏里州的斯通维尔进行了温室研究，以确定AMPA对GR和GS大豆植物生长，叶绿素含量，光合作用，结瘤，固氮酶活性，硝酸还原酶活性以及芽氮含量的影响。将AMPA分别以0.1和1.0 kg ha“ 1的量施用到一到两个三叶草叶期大豆上，这意味着草甘膦降解为AMPA的情况分别为10％和100％（1.0 kg ae ha'1的使用率）。总体而言，AMPA效应在1.0 kg ha-1的速率下比在0.1 kg ha-1的速率下更为明显。无论使用哪种大豆类型，使用AMPA处理后（DAT）3 d内，幼叶均受到较高的视觉损害（18-27％）。在两种大豆类型中，AMPA伤害在14 DAT时达到峰值46-49％，在28 DAT时下降到17-18％。在3、7、14和28 DAT时，AMPA分别使GR大豆的叶绿素含量降低了37％，48％，66％和23％，而GS大豆的叶绿素含量分别降低了17％，48％，57％和22％。 。与未处理的植物相比，AMPA在3、7和14 DAT分别使GR大豆的光合作用率降低了65％，85％和77％，而GS大豆的光合作用降低了59％，88％和69％。同样，与两种大豆类型的未处理植物相比，AMPA在3、7和14 DAT时降低了对水蒸气的气孔导度和蒸腾速率。通过28 DAT，Pho的合成速率，气孔导度和蒸腾速率恢复到未处理的植物水平。在28 DAT时株高和苗干重； AMPA不影响结瘤，10 DAT时的固氮酶活性以及3和14 DAT时的硝酸还原酶活性。 AMPA减少了10 DAT的根系繁殖，并降低了氮素含量。这些结果表明，叶面施用AMPA可以通过降低GR和GS大豆中高达14 DAT的叶绿素含量来间接降低光合作用，但受影响的植物可以在28 DAT时恢复正常生长。

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  • 来源
    《Chemosphere》 |2011年第4期|p.593-598|共6页
  • 作者

    Wei Ding; Krishna N. Reddy; Robert M. Zablotowicz; Nacer Bellaloui; H. Arnold Bruns;

  • 作者单位

    US Department of Agriculture, Agricultural Research Service, Crop Production Systems Research Unit, P.O. Box 350, 141 Experiment Station Road, Stoneville, MS 38776. USA,Northeast Agricultural University, Agronomy College, Department of Plant Protection and Key Laboratory of Soybean Biology in Chinese Ministry of Education, Harbin 150030, China;

    US Department of Agriculture, Agricultural Research Service, Crop Production Systems Research Unit, P.O. Box 350, 141 Experiment Station Road, Stoneville, MS 38776. USA;

    US Department of Agriculture, Agricultural Research Service, Crop Production Systems Research Unit, P.O. Box 350, 141 Experiment Station Road, Stoneville, MS 38776. USA;

    US Department of Agriculture, Agricultural Research Service, Crop Genetics Research Unit, P.O. Box 345, 141 Experiment Station Road, Stoneville, MS 38776, USA;

    US Department of Agriculture, Agricultural Research Service, Crop Production Systems Research Unit, P.O. Box 350, 141 Experiment Station Road, Stoneville, MS 38776. USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    aminomethylphosphonic acid; ampa; glyphosate; soybean injury; photosynthesis; nitrogen fixation;

    机译：氨基甲基膦酸;安帕草甘膦大豆伤害;光合作用;固氮;

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