Herbaspirillum rubrisubalbicans, a mild pathogen impairs growth of rice by augmenting ethylene levels

2017 ◽  
Vol 94 (6) ◽  
pp. 625-640 ◽  
Author(s):  
Glaucio Valdameri ◽  
Dayane Alberton ◽  
Vivian Rotuno Moure ◽  
Thiago Borba Kokot ◽  
Caroline Kukolj ◽  
...  
2015 ◽  
Vol 39 (6) ◽  
pp. 1595-1602 ◽  
Author(s):  
Valfredo Almeida Chaves ◽  
Silvana Gomes dos Santos ◽  
Nivaldo Schultz ◽  
Willian Pereira ◽  
Jailson Silva Sousa ◽  
...  

RESUMO A cana-de-açúcar é uma cultura de grande destaque na economia, em razão da produção de açúcar, etanol e energia. Tecnologias que possam contribuir para o aumento da produtividade e qualidade da cultura com mínimos danos ao meio ambiente são necessárias. Objetivou-se avaliar a produção de ácido indol acético de cinco estirpes de bactérias diazotróficas e o efeito da inoculação delas na brotação de duas variedades de cana-de-açúcar, RB867515 e IACSP95-5000. A produção de auxina foi determinada pelo teste colorimétrico, usando o reagente de Salkowski. Para avaliar a germinação, foi conduzido um experimento em casa de vegetação, utilizando-se delineamento experimental em blocos ao acaso com quatro repetições e sete tratamentos: controle não inoculado; inoculação mista com as cinco estirpes e inoculação individual com Gluconacetobacter diazotrophicus (Gd) estirpe BR11281T(PAL-5T), Herbaspirillum seropedicae (Hs - BR11335 = HRC54), Herbaspirillum rubrisubalbicans (Hr - BR11504 = HCC103), Burkholderia tropica (Bt - BR11366T = PPe 8 T) e Azospirillum amazonense (Aa - BR11145 = CBAMc). As bactérias mais eficientes na produção de auxina foram Hs e Hr, declinando 48 h após o crescimento. Hr, Aa e Bt aumentaram o índice de velocidade de germinação e o número de brotações nas duas variedades. Na var. RB867515, a velocidade de germinação ainda foi positivamente influenciada pela inoculação mista, sendo o mesmo observado pela inoculação de Gd na var. IACSP95-5000.


2017 ◽  
Vol 110 (12) ◽  
pp. 1555-1568
Author(s):  
Valéria Polese ◽  
Cleiton de Paula Soares ◽  
Paula Renata Alves da Silva ◽  
Jean Luiz Simões-Araújo ◽  
José Ivo Baldani ◽  
...  

2010 ◽  
Vol 56 (4) ◽  
pp. 342-347 ◽  
Author(s):  
R. V. Serrato ◽  
G. L. Sassaki ◽  
L. M. Cruz ◽  
R. W. Carlson ◽  
A. Muszyński ◽  
...  

Bacteria from the genus Herbaspirillum are endophytes responsible for nitrogen fixation in gramineous plants of economic importance such as maize, sugarcane, sorghum, rice, and wheat. Some species are known to produce plant growth substances. In contrast, Herbaspirillum rubrisubalbicans strains are known to be mild plant pathogens. The molecular communication between the plant and the microbes might involve lipopolysaccharides present in the outer membrane of these gram-negative bacteria. Phenol–water extraction was used to obtain lipopolysaccharides from 7 strains of Herbaspirillum seropedicae (SmR1, Z67, Z78, ZA95, and M2) and H. rubrisubalbicans (M1 and M4). The electrophoretic profiles and chemical composition of the lipopolysaccharides obtained in the phenol and aqueous extracts were shown herein.


Author(s):  

Abstract A new distribution map is provided for Herbaspirillum rubrisubalbicans (Christopher & Edgerton) Baldani et al. Bacteria. Major hosts: sugarcane (Saccharum officinarum) and Sorghum spp. Information is given on the geographical distribution in Asia (China, Guangdong, Hainan, Indonesia, Japan, Kyushu, Ryukyu Archipelago, Sri Lanka, Thailand), Africa (Angola, Benin, Burundi, Central African Republic, Cote d'lvoire, Madagascar, Malawi, Mauritius, Nigeria, Reunion, Tanzania, Togo), North America (USA, Florida, Louisiana, Texas), Central America and Caribbean (Barbados, Cuba, Guadeloupe, Jamaica, Martinique, Nicaragua, Panama, Puerto Rico), South America (Brazil, Bahia, Mato grosso, Minas Gerais, Rio de Janeiro, Colombia, Peru, Venezuela), Oceania (Australia, New South Wales, Queensland, Fiji, New Zealand).


2012 ◽  
Vol 12 (1) ◽  
pp. 98 ◽  
Author(s):  
Maria Schmidt ◽  
Eduardo Balsanelli ◽  
Hellison Faoro ◽  
Leonardo M Cruz ◽  
Roseli Wassem ◽  
...  

2020 ◽  
Vol 33 (2) ◽  
pp. 235-246
Author(s):  
Thalita Regina Tuleski ◽  
Jennifer Kimball ◽  
Fernanda P. do Amaral ◽  
Tomas P. Pereira ◽  
Michelle Zibetti Tadra-Sfeir ◽  
...  

Herbaspirillum rubrisubalbicans is the causal agent of red stripe disease (RSD) and mottle stripe disease of sorghum and sugarcane, respectively. In all, 63 genotypes of Sorghum bicolor were inoculated with H. rubrisubalbicans, with 59 showing RSD symptoms. Quantitative trait loci (QTL) analysis in a recombinant inbred line (RIL) population identified several QTL associated with variation in resistance to RSD. RNA sequencing analysis identified a number of genes whose transcript levels were differentially regulated during H. rubrisubalbicans infection. Among those genes that responded to H. rubrisubalbicans inoculation were many involved in plant–pathogen interactions such as leucine-rich repeat receptors, mitogen-activated protein kinase 1, calcium-binding proteins, transcriptional factors (ethylene-responsive element binding factor), and callose synthase. Pretreatment of sorghum leaves with the pathogen-associated molecular pattern (PAMP) molecules flg22 and chitooctaose provided protection against subsequent challenge with the pathogen, suggesting that PAMP-triggered immunity plays an important role in the sorghum immunity response. These data present baseline information for the use of the genetically tractable H. rubrisubalbicans–sorghum pathosystem for the study of innate immunity and disease resistance in this important grain and bioenergy crop. Information gained from the use of this system is likely to be informative for other monocots, including those more intractable for experimental study (e.g., sugarcane).


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Thalita Regina Tuleski ◽  
Valter Antônio de Baura ◽  
Lucélia Donatti ◽  
Fabio de Oliveira Pedrosa ◽  
Emanuel Maltempi de Souza ◽  
...  

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