Herbaspirillum seropedicae promotes maize growth but fails to control the maize leaf anthracnose

被引：10
|
作者：
Dall'Asta, Pamela [1 ]
Velho, Aline Cristina [2 ]
Pereira, Tomas Pellizzaro [1 ]
Stadnik, Marciel Joao [2 ]
Maisonnave Arisi, Ana Carolina [1 ]
机构：
[1] Univ Fed Santa Catarina, Mol Biol Lab, Dept Food Sci & Technol, Rod Admar Gonzaga 1346, BR-88034001 Florianopolis, SC, Brazil
[2] Univ Fed Santa Catarina, Plant Pathol Lab, Dept Phytotechny, Rod Admar Gonzaga 1346, BR-88034001 Florianopolis, SC, Brazil
来源：
PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS | 2019年 / 25卷 / 01期
关键词：
Colletotrichum graminicola; Anthracnose; Herbaspirillum seropedicae; Plant growth promoting bacteria; Diazotrophic bacteria; Biocontrol agent; SYSTEMIC RESISTANCE; HUMIC SUBSTANCES; MOLECULAR CHARACTERISTICS; DIAZOTROPHIC BACTERIA; NITROGEN-FIXATION; CORN ANTHRACNOSE; INDUCTION; QUANTIFICATION; COLONIZATION; RICE;
D O I：
10.1007/s12298-018-0616-2
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Herbaspirillum seropedicae is an endophytic diazotrophic bacterium and a plant growth promoting bacteria. Colletotrichum graminicola causes the anthracnose, one of the most destructive maize diseases worldwide. The main objective of this work was to evaluate the effects of H. seropedicae SmR1 strain on the plant growth and leaf anthracnose of maize plants grown in substrate amended or not amendedwith humic substances. In the first assay, plants were pre-treated with H. seropedicae and inoculated with C. graminicola at 7, 14 and 21days after treatment (DAT). In the second assay, plants were treated with H. seropedicae, grown in substrate amended with humic substances and inoculated at 3 and 7 DAT. The anthracnose severity was assessed by measurement of necrotic and chlorotic leaf area, and bacteria were quantified in leaves by quantitative PCR. H. seropedicae did not affect the disease severity in maize leaves, although it efficiently colonized the leaf tissues and it promoted maize leaf growth. Humic substances improved H. seropedicae colonization in maize.
引用
收藏
页码：167 / 176
页数：10
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