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[学术文献 ] Unlocking the potential of ecofriendly guardians for biological control of plant diseases, crop protection and production in sustainable agriculture 进入全文
3 Biotech 期刊
Several beneficial microbial strains inhibit the growth of different phytopathogens and commercialized worldwide as biocontrol agents (BCAs) for plant disease management. These BCAs employ different strategies for growth inhibition of pathogens, which includes production of antibiotics, siderophores, lytic enzymes, bacteriocins, hydrogen cyanide, volatile organic compounds, biosurfactants and induction of systemic resistance. This review discusses the characterization of antagonistic microbes and their antimicrobial metabolites, and the application of these BCAs for disease control. The present review also provides a comprehensive summary of the genetic organization and regulation of the biosynthesis of different antimicrobial metabolites in antagonistic strains. Use of molecular engineering to improve production of metabolites in BCAs and their efficacy in disease control is also discussed. The application of these biopesticides will reduce use of conventional pesticides in disease control and help in achieving sustainable and eco-friendly agricultural systems.
[学术文献 ] Modeling the effects of trap crop attraction strength, patch dispersion, and biological control on pest suppression 进入全文
Arthropod-Plant Interactions 期刊
Trap cropping has long been an important component of integrated pest management schemes in agricultural ecosystems. Spatial dispersion and the strength of attraction of trap crops relative to principal crops, along with insect movement behavior, may all moderate the efficacy of trap cropping in controlling pests. Here we employ a simple differential-equation patch model to explore the interplay of trap cropping and biological control. In particular, we vary attraction strength to trap crops along with predator foraging behavior (mobility and directedness) to determine the relative influences of these factors on herbivore suppression. Our results highlight the fact pest suppression is mediated by the relative palatability of trap crops to both pests and predators, and somewhat mediated by the spatial dispersion of trap crops. We discuss the potential for using trap crops in combination with natural enemies to boost pest suppression in annual cropping systems.
[会议论文 ] Automated Plant Viability System for Early Detection of Plant Disease 进入全文
IFAC PAPERSONLINE
报道了一种基于微控制和无线通信技术的植物存活率传感器系统的设计和实现。该系统由固相微萃取（SPME）注射器、带OV-1涂层的气相色谱柱、低功耗热导传感器和电路设计组成。该系统使用SPME注射方法，可以立即将少量分析物注射到GC系统中。具有二维温度编程的色谱柱提供了更好的挥发性化合物分离，CMOS TCD传感器为低浓度检测提供了高分辨率。采用12位微控制器、低噪声电路系统和蓝牙通信技术对VOC气体进行实时监测。记录的性能表明，该系统能够检测并将感兴趣的挥发性有机化合物传输到手持设备。
[学术文献 ] Molecular Advances in Abiotic Stress Signaling in Plants: Focus on Atmospheric Stressors 进入全文
International Journal of Molecular Sciences 期刊
Plants face many abiotic stresses that significantly impact their growth and survival, requiring intricate mechanisms in order to adapt and thrive. These responses occur at multiple levels of plant organization, beginning with changes in biochemical processes such as respiration, photosynthesis, and transpiration, which form the basis of stress adaptation. On a broader scale, these biochemical alterations lead to morphological and anatomical changes in plant organs, thereby enabling improved resilience to environmental challenges. Underlying these adaptations is a sophisticated molecular signaling network that acts as an early warning system, allowing the plants to perceive and respond to external abiotic stimuli effectively. This signaling machinery integrates various molecular pathways to initiate appropriate physiological and structural changes. Understanding the interplay between molecular signals and plant responses provides valuable insights into the complex nature of abiotic stress tolerance. Such knowledge is crucial for developing strategies to enhance crop resilience in the face of global environmental changes. This Special Issue presents a collection of 12 original and review articles that explore the key thematic areas highlighted within this SI.
[学术文献 ] Green Leaf Volatiles: A New Player in the Protection against Abiotic Stresses? 进入全文
International Journal of Molecular Sciences 期刊
To date, the role of green leaf volatiles (GLVs) has been mainly constrained to protecting plants against pests and pathogens. However, increasing evidence suggests that among the stresses that can significantly harm plants, GLVs can also provide significant protection against heat, cold, drought, light, and salinity stress. But while the molecular basis for this protection is still largely unknown, it seems obvious that a common theme in the way GLVs work is that most, if not all, of these stresses are associated with physical damage to the plants, which, in turn, is the major event responsible for the production of GLVs. Here, I summarize the current state of knowledge on GLVs and abiotic stresses and provide a model explaining the multifunctionality of these compounds.
[相关专利 ] A PLANT WITH INCREASED DEFENSE RESPONSE, REDUCED DISEASE LEVELS AND METHODS TO GENERATE SAME 进入全文
美国专利
本发明涉及一种含有LeEIX1（番茄乙烯诱导木聚糖酶受体1）基因受损的突变植物系。与同一种群的非突变植物相比，所述突变植物在病原体暴露时具有增强的防御反应和降低的疾病水平。本发明还涉及增强植物防御反应和降低植物病害水平的方法，包括(a)设计至少一个核酸序列，配置为靶向并损害植物的LeEIX1基因，(b)利用所述至少一个核酸序列的基因编辑过程，(c)获得至少一个突变植物系，包含受损的LeEIX1基因，(d)种植所述植物。(e)用至少一种细菌生物防治剂接种所述植物。
