昆虫取食诱导的植物间的通信作用综述

昆虫取食不仅能诱导植物本身产生防御反应,还能诱导邻近健康植物产生防御反应,这就是植物间通信作用。植物受到昆虫取食后,会释放出一系列的挥发性化合物,已经证明昆虫取食诱导的植物挥发性化合物在植物通信中起作用。本文总结昆虫取食诱导的挥发性化合物在植物通信中的作用及其机制,这有利于增加植物抗虫性找到害虫综合防治的新途径。

昆虫诱导的植物免疫反应机制

综述植物、草食动物化学通讯,分析了影响植物与节肢动物化学通讯的潜力及相关机制,并探讨了当前的研究进展,及其在该领域的应用前景。希望这将促进该领域的研究,并增进我们对作物种植对节肢动物群落结构潜在影响的理解。

Involvement of Calcium dependent Protein Kinases in ABA regulation of Stomatal Movement

Patch clamp techniques were employed to investigate if calcium dependent protein kinases (CDPKs) be involved in the signal transduction pathways of stomatal movement regulation by the phytohormone abscisic acid (ABA) in Vicia faba. Stomatal opening was completely inhibited by external application of 1 μmol/L ABA, and such ABA inhibition was significantly reversed by the addition of CDPK inhibitor trifluoperazine (TFP). The inward whole cell K + currents were inhibited by 60% in the presence of 1 μmol/L intracellular ABA, and this inhibition was completely abolished by the addition of CDPK competitive substrate histone Ⅲ S. The results suggest that CDPKs may be involved in the signal transduction cascades of ABA regulated stomatal movements.

植物化学通信研究进展

人类之间、动物之间存在通信是毋庸置疑的。最近,越来越多的研究证明:植物与植物之间同样存在着化学通信。随着研究的开展,科学家们发现在植物与动物之间、与微生物之间,化学通信依旧存在。植物在受到生物性和非生物性的胁迫时会与邻株植物、植食性昆虫天敌之间发送信号;在非伤害条件下,植物化学通信同样存在。这些不同生物体之间的化学通信都是通过有机挥发性化合物介导进行的。植物化学通信的研究还处在前期,未来的发展空间及应用空间还很大;任何成果都会引起世界瞩目;因此,对植物化学通信研究的开展具有重大意义。

最新装置可以倾听植物的“窃窃私语”

据英国《每日邮报》报道，如果某人告诉你他正在倾听植物说话，你可能会认为这个人一定是疯了。

Cancers chemoprevention by dietary phytochemicals and traditional Chinese medicines: epigenetics and cellular signaling pathways

The incidence and mortality of cancer have been increasing alarmingly in China and worldwide.Unlike other chronic diseases such as metabolic,cardiovascular,and neuropathies,most cancers,especially metastatic ones,are still essentially uncontrollable in spite of significant progresses such as early diagnosis and immunotherapies.