Diversity and biopotential of Bacillus velezensis strains A6 and P42 against rice blast and bacterial blight of pomegranate

2021 ◽  
Author(s):  
Siddulakshmi Prasanna ◽  
M. K. Prasannakumar ◽  
H. B. Mahesh ◽  
Gopal Venkatesh Babu ◽  
P. Kirnaymayee ◽  
...  
Keyword(s):  
Rice Blast ◽  
Bacterial Blight ◽  
Bacillus Velezensis

Isolation and characterization of rice lesion-mimic mutants with enhanced resistance to rice blast and bacterial blight

Plant Science ◽  
2002 ◽  
Vol 163 (2) ◽  
pp. 345-353 ◽  
Author(s):  
Ritsuko Mizobuchi ◽  
Hideyuki Hirabayashi ◽  
Ryota Kaji ◽  
Yoko Nishizawa ◽  
Atsushi Yoshimura ◽  
...  
Keyword(s):  
Rice Blast ◽  
Bacterial Blight ◽  
Lesion Mimic ◽  
Isolation And Characterization ◽  
Enhanced Resistance

Marker-assisted breeding of Chinese elite rice cultivar 9311 for disease resistance to rice blast and bacterial blight and tolerance to submergence

2017 ◽  
Vol 37 (8) ◽  
Author(s):  
Yanchang Luo ◽  
Tingchen Ma ◽  
Aifang Zhang ◽  
Kar Hui Ong ◽  
Zhixiang Luo ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Rice Blast ◽  
Bacterial Blight ◽  
Rice Cultivar ◽  
Marker Assisted Breeding

scholarly journals The antagonistic mechanism of Bacillus velezensis ZW10 against rice blast disease: Evaluation of ZW10 as a potential biopesticide

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256807
Author(s):  
Zuo Chen ◽  
Lu Zhao ◽  
Yilun Dong ◽  
Wenqian Chen ◽  
Chunliu Li ◽  
...  
Keyword(s):  
Rice Blast ◽  
Early Stage ◽  
Defense Responses ◽  
Blast Disease ◽  
Rice Grain ◽  
Bacillus Velezensis ◽  
Control Effect ◽  
Control Activity ◽  
Antifungal Substances

Rice blast, caused by the fungus Magnaporthe oryzae, is one of the three major diseases affecting rice production and quality; it reduces rice grain yield by nearly 30%. In the early stage of this study, a strain of Bacillus velezensis with strong inhibition of M. oryzae was isolated and named ZW10. In vitro assays indicated prolonged germination time of conidia of M. oryzae treated with the antifungal substances of ZW10, 78% of the conidia could not form appressorium, and the conidial tubes expanded to form vacuolar structure and then shrank. The results of FDA-PI composite dyes showed that the antifungal substances of ZW10 inhibited the normal activity of M. oryzae hyphae that were rarely able to infect the epidermal cells of rice leaf sheath in vivo tests. In addition, rice treated with the antifungal substances of ZW10 showed a variety of defense responses, including activation of defense-related enzymes, increased expression of the salicylic acid pathway genes, and accumulation of hydrogen peroxide (H2O2), which might function directly or indirectly in resistance to pathogen attack. The field experiment with rice blast infection in different periods showed that the antifungal substances of ZW10 had the same control effect as carbendazim. The significant biological control activity of ZW10 and its capacity to stimulate host defenses suggest that this B. velezensis strain has the potential to be developed into a biopesticide for the biocontrol of rice blast.

Marker-assisted selection of two-line hybrid rice for disease resistance to rice blast and bacterial blight

2015 ◽  
Vol 184 ◽  
pp. 1-8 ◽  
Author(s):  
Dahu Ni ◽  
Fengshun Song ◽  
Jinlong Ni ◽  
Aifang Zhang ◽  
Chunlian Wang ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Marker Assisted Selection ◽  
Rice Blast ◽  
Bacterial Blight ◽  
Hybrid Rice ◽  
Selection Of

scholarly journals Characterizing Rice Lesion Mimic Mutants and Identifying a Mutant with Broad-Spectrum Resistance to Rice Blast and Bacterial Blight

2000 ◽  
Vol 13 (8) ◽  
pp. 869-876 ◽  
Author(s):  
Zhongchao Yin ◽  
Jun Chen ◽  
Lirong Zeng ◽  
Meiling Goh ◽  
Hei Leung ◽  
...  
Keyword(s):  
Cell Death ◽  
Disease Resistance ◽  
Broad Spectrum ◽  
Rice Blast ◽  
Bacterial Blight ◽  
Blue Staining ◽  
Lesion Mimic ◽  
Broad Spectrum Resistance ◽  
Defense Related Gene ◽  
Recessive Genes

Many plant mutants develop spontaneous lesions that resemble disease symptoms in the absence of pathogen attack. In several pathosystems, lesion mimic mutations have been shown to be involved in programmed cell death, which in some instances leads to enhanced disease resistance to multiple pathogens. We investigated the relationship between spontaneous cell death and disease resistance in rice with nine mutants with a range of lesion mimic phenotypes. All nine mutations are controlled by recessive genes and some of these mutants have stunted growth and other abnormal characteristics. The lesion mimics that appeared on the leaves of these mutants were caused by cell death as measured by trypan blue staining. Activation of six defense-related genes was observed in most of the mutants when the mimic lesions developed. Four mutants exhibited significant enhanced resistance to rice blast. One of the mutants, spl11, confers non-race-specific resistance not only to blast but also to bacterial blight. The level of resistance in the spl11 mutant to the two pathogens correlates with the defense-related gene expression and lesion development on the leaves. The results suggest that some lesion mimic mutations in rice may be involved in disease resistance, and cloning of these genes may provide a clue to developing broad-spectrum resistance to diverse pathogens.

scholarly journals Accelerated molecular breeding of a novel P/TGMS line with broad-spectrum resistance to rice blast and bacterial blight in two-line hybrid rice

Rice ◽  
2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiaming Mi ◽  
Dabing Yang ◽  
Yi Chen ◽  
Jiefeng Jiang ◽  
Haipeng Mou ◽  
...  
Keyword(s):  
Broad Spectrum ◽  
Rice Blast ◽  
Bacterial Blight ◽  
Molecular Breeding ◽  
Hybrid Rice ◽  
Broad Spectrum Resistance

Exemplar Abstract for Bacillus velezensis Ruiz-García et al. 2005.

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Bacillus Velezensis
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