PDF(Pubmed)
Abstract：
Mitigating pre-harvest sprouting (PHS) and post-harvest food loss (PHFL) is essential for enhancing food securrity. To reduce food loss, the use of plant derived specialized metabolites can represent a good approach to develop a more eco-friendly agriculture. Here, we have discovered that soybean seeds hidden underground during winter by Tscherskia triton and Apodemus agrarius during winter possess a higher concentration of volatile organic compounds (VOCs) compared to those remaining exposed in fields. This selection by rodents suggests that among the identified volatiles, 3-FurAldehyde (Fur) and (E)-2-Heptenal (eHep) effectively inhibit the growth of plant pathogens such as Aspergillus flavus, Alternaria alternata, Fusarium solani and Pseudomonas syringae. Additionally, compounds such as Camphene (Cam), 3-FurAldehyde, and (E)-2-Heptenal, suppress the germination of seeds in crops including soybean, rice, maize, and wheat. Importantly, some of these VOCs also prevent rice seeds from pre-harvest sprouting. Consequently, our findings offer straightforward and practical approaches to seed protection and the reduction of PHS and PHFL, indicating potential new pathways for breeding, and reducing both PHS and pesticide usage in agriculture.
摘要：
减少收获前发芽（PHS）和收获后食物损失（PHFL）对于提高食物安全性至关重要。为了减少食物损失，使用植物衍生的专门代谢物可以代表开发更环保农业的好方法。这里,我们发现，与在田间暴露的大豆种子相比，冬季Tscherskiatriton和Apodemusagrarius在冬季隐藏在地下的大豆种子具有更高的挥发性有机化合物（VOC）浓度。啮齿动物的这种选择表明，在确定的挥发物中，3-呋喃醛（Fur）和（E）-2-庚醛（eHep）有效抑制植物病原体的生长，例如黄曲霉，交替菌,镰刀菌和丁香假单胞菌。此外,化合物如樟脑烯（凸轮），3-呋喃醛，和（E）-2-七，抑制包括大豆在内的作物种子的发芽，大米,玉米,和小麦。重要的是,这些挥发性有机化合物中的一些还防止水稻种子收获前发芽。因此,我们的发现为种子保护和减少PHS和PHFL提供了简单实用的方法，表明潜在的育种新途径，并减少农业中小灵通和农药的使用。
