植物激素作为生物刺激剂在感染玉米黑粉病的匈牙利甜玉米和饲料玉米杂交种中的应用

The Application of Phytohormones as Biostimulants in Corn Smut Infected Hungarian Sweet and Fodder Corn Hybrids.

作者信息

Szőke Lóránt, Moloi Makoena Joyce, Kovács Gabriella Enikő, Biró Györgyi, Radócz László, Hájos Mária Takácsné, Kovács Béla, Rácz Dalma, Danter Mátyás, Tóth Brigitta

机构信息

Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Science, University of Debrecen, 138 Böszörményi St., 4032 Debrecen, Hungary.

Department of Plant Sciences, Faculty of Natural and Agricultural Sciences, University of the Free State-Main Campus, P.O. Box 339, 9300 Bloemfontein, South Africa.

出版信息

Plants (Basel). 2021 Sep 1;10(9):1822. doi: 10.3390/plants10091822.

DOI:10.3390/plants10091822

PMID:34579355

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8472417/

Abstract

The main goal of this research was to investigate the effects of corn smut ( DC. Corda) infection on the morphological (plant height, and stem diameter), and biochemical parameters of L. plants. The biochemical parameters included changes in the relative chlorophyll, malondialdehyde (MDA), and photosynthesis pigments' contents, as well as the activities of antioxidant enzymes-ascorbate peroxidase (APX), guaiacol peroxidase (POD), and superoxide dismutase (SOD). The second aim of this study was to evaluate the impact of phytohormones (auxin, cytokinin, gibberellin, and ethylene) on corn smut-infected plants. The parameters were measured 7 and 11 days after corn smut infection (DACSI). Two hybrids were grown in a greenhouse, one fodder (Armagnac) and one a sweet corn (Desszert 73). The relative and the absolute amount of photosynthetic pigments were significantly lower in the infected plants in both hybrids 11 DACSI. Activities of the antioxidant enzymes and MDA content were higher in both infected hybrids. Auxin, cytokinin, and gibberellin application diminished the negative effects of the corn smut infection (CSI) in the sweet corn hybrid. Phytohormones i.e., auxin, gibberellin, and cytokinin can be a new method in protection against corn smut.

摘要

本研究的主要目标是调查玉米黑粉菌（DC. Corda）感染对L.植物形态学（株高和茎直径）及生化参数的影响。生化参数包括相对叶绿素、丙二醛（MDA）和光合色素含量的变化，以及抗氧化酶——抗坏血酸过氧化物酶（APX）、愈创木酚过氧化物酶（POD）和超氧化物歧化酶（SOD）的活性。本研究的第二个目的是评估植物激素（生长素、细胞分裂素、赤霉素和乙烯）对玉米黑粉菌感染植株的影响。在玉米黑粉菌感染后第7天和第11天（DACSI）测量这些参数。在温室中种植了两个杂交品种，一个是饲料玉米（阿马尼亚克），另一个是甜玉米（甜点73）。在感染后第11天，两个杂交品种的感染植株中光合色素的相对含量和绝对含量均显著降低。两个感染杂交品种中抗氧化酶的活性和MDA含量均较高。在甜玉米杂交品种中，施用生长素、细胞分裂素和赤霉素可减轻玉米黑粉菌感染（CSI）的负面影响。植物激素，即生长素、赤霉素和细胞分裂素，可能是一种防治玉米黑粉病的新方法。