PDF(Pubmed)
Abstract：
Leaf mustard (Brassica juncea L.) is explored for its biofumigant properties, derived from its secondary metabolites, particularly allyl isothiocyanate (AITC), produced during the enzymatic breakdown of glucosinolates like sinigrin. The research examines eight leaf mustard cultivars developed in Yeosu city, South Korea, focusing on their genetic characteristics, AITC concentration and nitriles formation rates from glucosinolates. Results indicate that the allelopathic effects, largely dependent on AITC concentration and enzymatic activity, vary across cultivar. Sinigrin and AITC constitute 79% and 36%, respectively, of glucosinolate and its hydrolysis products. The cultivar \'Nuttongii\' demonstrates significant potential for inhibiting weeds, exhibiting the highest AITC concentration at 27.47 ± 6.46 µmole g-1 These outcomes highlight the importance of selecting mustard cultivars for biofumigation based on their glucosinolate profiles and hydrolysis product yields. The study also identifies a significant genetic influence on AITC and nitrile formation, suggesting that epithiospecifier protein modulation could enhance both allelopathic and other beneficial effects. Collectively, the research underscores the promise of mustard as a sustainable, environmentally friendly alternative to traditional herbicides.
摘要：
芥菜（BrassicajunceaL.）的生物增感特性得到了探索，来自其次级代谢产物，特别是异硫氰酸烯丙酯(AITC)，在芥子苷等芥子油苷的酶分解过程中产生。本研究考察了丽苏市开发的八个芥菜品种，韩国,关注它们的遗传特征，AITC浓度和芥子油苷的腈形成率。结果表明，化感作用，很大程度上取决于AITC浓度和酶活性，因品种而异。Sinigrin和AITC分别占79%和36%，分别,芥子油苷及其水解产物。品种“Nuttongii”显示出抑制杂草的显着潜力，在27.47±6.46µmoleg-1处表现出最高的AITC浓度。这些结果突显了根据芥子油苷的概况和水解产物的产量选择芥子菜品种进行生物熏蒸的重要性。该研究还确定了对AITC和腈形成的显着遗传影响，这表明表硫特异性蛋白调节可以增强化感作用和其他有益作用。总的来说，这项研究强调了芥末作为一种可持续的，环保替代传统除草剂。
