HEXANAL, TRANS-2-HEXENAL, AND TRANS-2-NONENAL INHIBIT SOYBEAN, GLYCINE-MAX, SEED-GERMINATION
HEXANAL, TRANS-2-HEXENAL, AND TRANS-2-NONENAL INHIBIT SOYBEAN, GLYCINE-MAX, SEED-GERMINATION
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DOI：
10.1021/jf00096a005
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发表时间：
1990-06-01
影响因子：
6.1
通讯作者：
DESJARDINS, AE
中科院分区：
文献类型：
--
作者：
GARDNER, HW;DORNBOS, DL;DESJARDINS, AE
己醛，这是生物合成的脂肪氧合酶和氢过氧化物裂解酶对亚油酸的作用在植物中，抑制大豆，大豆品种的发芽和随后的生长。世纪。将用流通系统（100 mL/min）在空气中蒸发的己醛连续递送至发芽种子。仅需要0.9 μ g己醛/mL空气来抑制50%的种子萌发;在1.8 μ g己醛/mL空气的剂量下发生几乎100%的抑制。在没有己醛的情况下，真菌生长通常存在于种皮上，但在亚致死剂量的己醛下，幼苗，包括残留的种皮，在很大程度上没有真菌生长。己醛和其他两个醛形成的结果，脂氧合酶-氢过氧化物裂解酶的作用，反式-2-己醛和反式-2-壬烯醛，通过在培养皿生物测定的短时间曝光的相对毒性进行了比较。醛类化合物饱和蒸气对萌发种子生长的抑制作用大小顺序为：反式-2-己醛>己醛>反式-2-壬烯醛。然而，当考虑到醛的相对蒸气压时，计算出的毒性顺序约为反式-2-壬烯醛≥。反式-2-己醛>己醛。
Hexanal, which is biosynthesized in plants by the action of lipoxygenase and hydroperoxide lyase on linoleic acid, inhibited the germination and subsequent growth of soybean, Glycine max cv. Century. Hexanal, vaporized in air with a flow-through system (100 mL/min), was continuously delivered to germinating seeds. Only 0.9 .mu.g of hexanal/mL of air was required to inhibit seed germination by 50%; nearly 100% inhibition occurred with a dose of 1.8 .mu.g of hexanal/mL of air. In the absence of hexanal, fungal growth was usually present on the testa, but at sublethal doses of hexanal, the seedlings, including the residual testa, were largely devoid of fungal growth. The relative toxicities of hexanal and two other aldehydes formed as a result of lipoxygenase-hydroperoxide lyase action, trans-2-hexanal and trans-2-nonenal, were compared by a short time exposure in a Petri dish bioassay. The order of inhibition of growth was trans-2-hexanal > hexanal > trans-2-nonenal when germinating seeds were exposed to saturating vapors of the aldehydes. However, when the relative vapor pressure of the aldehydes was accounted for, the order of toxicity was calculated to be approximately trans-2-nonenal .gtoreq. trans-2-hexanal > hexanal.