Al-Askar Abdulaziz A, Saber WesamEldin I A, Ghoneem Khalid M, Hafez Elsayed E, Ibrahim Amira A
Botany and Microbiology Department, Faculty of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Microbial Activity Unit,Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Center (ID: 60019332), Giza 12112, Egypt.
Plants (Basel). 2021 Jan 24;10(2):222. doi: 10.3390/plants10020222.
Presently, the bioprocessing of agricultural residues to various bioactive compounds is of great concern, with the potential to be used as plant growth promoters and as a reductive of various diseases. , one of the most consumed crops in the human diet, is attacked by Fusarium wilt disease, so the main aim is to biocontrol the pathogen. Several fungal species were isolated from decayed maize stover (MS). was chosen based on its organic acid productivity and was molecularly identified (GenBank accession number is MW195019). Citric acid (CA) was the major detected organic acid by HPLC. In vitro, CA of at 75% completely repressed the growth of f. sp. (FOL). In vivo, soaking tomato seeds in CA enhanced the seed germination and vigor index. and/or its CA suppressed the wilt disease caused by FOL compared to control. There was a proportional increment of plant growth and yield, as well as improvements in the biochemical parameters (chlorophyll pigments, total phenolic contents and peroxidase, and polyphenol oxidase activities), suggesting targeting both the bioconversion of MS into CA and biological control of FOL.
目前，将农业残留物生物加工成各种生物活性化合物备受关注，这些化合物有潜力用作植物生长促进剂和减少各种疾病。玉米是人类饮食中消耗量最大的作物之一，受到枯萎病的侵袭，因此主要目标是对病原体进行生物防治。从腐烂的玉米秸秆（MS）中分离出了几种真菌物种。根据其有机酸产量选择了[具体菌种名称未给出]，并对其进行了分子鉴定（GenBank登录号为MW195019）。通过高效液相色谱法检测到柠檬酸（CA）是主要的有机酸。在体外，75%浓度的[具体菌种名称未给出]产生的CA完全抑制了尖孢镰刀菌古巴专化型（FOL）的生长。在体内，将番茄种子浸泡在CA中可提高种子发芽率和活力指数。与对照相比，[具体菌种名称未给出]和/或其产生的CA抑制了由FOL引起的枯萎病。植物生长和产量呈比例增加，生化参数（叶绿素色素、总酚含量以及过氧化物酶和多酚氧化酶活性）也有所改善，这表明既要将MS生物转化为CA，又要对FOL进行生物防治。
