Control of Drought Stress in Wheat Using Plant-Growth-Promoting Bacteria

Kasim, Wedad A.; Osman, Mohamed; Omar, M.; El-Daim, Islam A. Abd; Bejai, Sarosh; Meijer, Johan

doi:10.1007/s00344-012-9283-7

Cited by 352 publications

(171 citation statements)

References 38 publications

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“…Reduction in electrolyte losses under water stress results in a better membrane integrity and tolerance to oxidative stress (LIU et al, 2011 Inoculation with A. brasilense induced homeostatic mechanisms that generate tolerance to drought in prime wheat (KASIM et al, 2013). Moreover, drought increases reactive oxygen species production (BECK et al, 2007), which can damage cells and activate defense responses to water stress (DOORNBOS et al, 2012;FAROOQ et al, 2009).…”

Section: Means Followed By the Same Capital Letter In The Column (Cormentioning

confidence: 99%

Plant growth-promoting bacteria effect in withstanding drought in wheat cultivars

Furlan

Saatkamp

Volpiano

et al. 2017

RSA

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Resumo -Este trabalho avaliou genótipos de trigo em condições de escassez de água inoculados com Azospirillum brasilense e Herbaspirillum seropedicae, com e sem adubação nitrogenada. Para tanto, amostras para determinação do conteúdo relativo de água na folha (CRA) e do índice de estabilidade da membrana (IEM) foram coletadas no 1º e 8º dias de uma restrição total de água no estágio de emborrachamento. Além disso, os parâmetros de biomassa, nitrogênio total (NT) e produtividade foram determinados na colheita. Como resultado, os genótipos mostraram um desempenho distinto. Os dados de CRA e IEM revelaram que a inoculação de A. brasilense e H. seropedicae são capazes de conduzir o genótipo CD 120 à tolerância à seca. Além disso, o índice de grãos foi melhorado em todas as condições em que H. seropedicae estava presente em ambos os diferentes regimes de água. O H. seropedicae inoculado juntamente com adubo nitrogenado também aumentou o rendimento de grãos sob o regime de escassez de água. Além disso, A. brasilense inoculado com adubo nitrogenado foi capaz de melhorar a massa de 1000 grãos de plantas sob escassez de água. O cultivar Frontana exibiu a capacidade de manutenção do IEM e CRA apenas quando H. seropedicae ou ambas as bactérias mais adubo nitrogenado foram aplicados, no entanto, esta cultivar não apresentou diferenças em termos de massa fresca e seca da parte aérea e radicular, NT ou produtividade. Estes resultados apontaram H. seropedicae como promissora para inoculação em cereais e o CD120 como um bom modelo de planta para estudar a interação de plantas e bactérias.Palavras-Chave -status hídrico, associação planta-bactéria, rizobactérias. Abstract -This work evaluated wheat genotypes under water deficit inoculated with Azospirillum brasilense andHerbaspirillum seropedicae, with and without nitrogen fertilization. Samples of the plants were collected to evaluate its relative water content (RWC) and membrane stability index (MSI) at the 1 st and 8 th day of total water restriction at the booting stage. The plant biomass, total nitrogen (TN) and grain yield were determined at harvesting. The genotypes showed different performances. According to the results of RWC and MSI, inoculation with A. brasilense and H. seropedicae can make the cultivar CD-120 more tolerant to drought. Grain index was improved with H. seropedicae in all conditions and water regimes. H. seropedicae with nitrogen fertilization increased grain yield under water deficit. A. brasilense with nitrogen fertilization improved the 1000-grain weight of plants under water deficit. The cultivar Frontana maintained its cellular integrity and RWC with nitrogen fertilization combined with H. seropedicae and with both bacteria, however the shoot and root fresh and dry weights, TN and yield of this cultivar showed no differences. These results show the inoculation with H. seropedicae as promising to cereals, and the cultivar CD-120 as a good plant model to study plant-bacteria interaction.

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Section: Means Followed By the Same Capital Letter In The Column (Cormentioning

confidence: 99%

Plant growth-promoting bacteria effect in withstanding drought in wheat cultivars

Furlan

Saatkamp

Volpiano

et al. 2017

RSA

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“…It is estimated that drought stress may cause a 50% loss in crop plants (Kasim et al 2013). Drought disturbs the water potential and turgor of the plants sufficiently, to inhibit with normal functioning of the plant (Hsiao 2000).…”

Section: Introductionmentioning

confidence: 99%

Effects of exogenously applied plant growth regulators in combination with PGPR on the physiology and root growth of chickpea (Cicer arietinum) and their role in drought tolerance

Khan

Bano

Zandi

2018

Journal of Plant Interactions

148

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Both the plant growth promoting rhizobacteria (PGPR) and plant growth regulators (PGR) exert beneficial effects on plant growth even under stress, but combined effect of both of them has not been evaluated yet. Present investigation was aimed to determine the responses of 2 chickpea varieties (differing in drought tolerance) to 3 PGPR viz. Bacillus subtilis, Bacillus thuringiensis and Bacillus megaterium and PGR (SA and Putrescine) on physiology of chickpea grown in sandy soil. The PGR, Salicylic acid (SA) and Putrescine (Put) were sprayed on the seedling 20 days after germination. Results revealed, synergistic effects of PGPR and PGR on chlorophyll, protein and sugar contents. Addition of PGR to PGPR inoculated plants assisted the plant in osmoregulation and amelioration of oxidative stresses and in induction of new proteins. Combined application of PGR and PGPR decreased lipid peroxidation more effectively but increased the leaf area. It is inferred that PGPR and PGR work synergistically to promote growth of plants under moisture and nutrient deficit condition of sandy soil. Since, SA induces Systemic Acquired Resistance (SAR) in plants hence the addition of SA along with PGPR may render the plant more productive and better tolerant to diseases/pathogen attack. ARTICLE HISTORY

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“…En otros cultivos se han señalado como inductores de tolerancia en trigo (Triticum sativum) y leguminosas (Vigna radiata) al ser inoculados en semilla y promoviendo el incremento en los niveles de regulación de genes relacionados con la tolerancia a sequía y la actividad de diversas enzimas (Kasim et al, 2013;Saravanakumar et al, 2011).…”

Section: Resultados Y Discusiónunclassified

“…Por la frecuencia de los aislamientos, en el presente estudio se destacan tres grupos de bacterias endófitas en la raíz de maíces tolerantes y susceptibles a sequía: 1) altamente frecuentes (Bacillus subtilis, Bacillus megaterium y Pseudomonas geniculata), aislados durante los tres ciclos de cultivo in seed, for they promoted an increase in the levels of regulation of genes related to drought tolerance and the activity of diverse enzymes (Kasim et al, 2013;Saravanakumar et al, 2011).…”

Section: Resultados Y Discusiónunclassified

Bacterias endófitas de la raíz en líneas de maíces tolerantes y susceptibles a sequía

Sánchez-Bautista

Alba

Aranda-Ocampo

et al. 2018

RMF

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Resumen. El maíz (Zea mays) ocupa el segundo lugar como alimento en el mundo y la sequía limita su productividad. Las plantas albergan bacterias endófitas que influyen en la sanidad y tolerancia a la sequía. El objetivo de esta investigación fue estimar la densidad y diversidad de las bacterias endófitas cultivables de la raíz en siete líneas homocigóticas de maíces tolerantes y siete susceptibles a sequía en tres localidades de México durante tres ciclos del cultivo. La densidad y diversidad de las Root endophyte bacteria in drought-tolerant and drought-susceptible maize lines Abstract. Maize (Zea mays) ranks second as foodin the world and drought limits its productivity. Plants harbor endophytic bacteria that influence health and drought tolerance. The goal of this research was to estimate the density and diversity of cultivable endophyte bacteria from the root system of seven homozygous maize drought-tolerant and seven drought-susceptible lines in three locations of Mexico during three crop cycles. The density and diversity of bacterial populations was assessed by direct counting on plates and identified by PCR. The results identified three groups of endophytic bacteria: 1) highly frequent (Bacillus subtilis, Bacillus megaterium y Pseudomonas geniculata), 2) frequent (Bacillus firmus, Pseudomonas hibiscola y Sinorhizobium meliloti) y 3) low frequency (Acinetobacter soli, Stenotrophomonas maltophila y Burkholderia gladioli. The analysis of variance (ANOVA) showed significant differences (p≤0.05) in density ( Log10 CFU g -1 root) of population by location, crop cycle, days after sowing and Publicación en línea, enero 2018 36Fully Bilingual revista Mexicana de FitoPatoloGía Mexican Journal oF PhytoPatholoGy poblaciones bacterianas se evaluó mediante conteo directo en placas y se identificaron por PCR. Los resultados identificaron tres grupos de bacterias endófitas: 1) altamente frecuentes (Bacillus subtilis, Bacillus megaterium y Pseudomonas geniculata), 2) frecuentes (Bacillus firmus, Pseudomonas hibiscola y Sinorhizobium meliloti) y 3) baja frecuencia (Acinetobacter soli, Stenotrophomonas maltophila y Burkholderia gladioli. El análisis de varianza (ANOVA) mostró diferencias significativas (p≤0,05) en la densidad ( Log10 UFC g -1 de raíz) de población por localidad, ciclo de cultivo, días después de siembra y líneas de maíz. La densidad de Bacillus subtilis, Pseudomonas hibiscola en la localidad de El Batán y Bacillus megaterium, Sinorhizobium meliloti en Tlaltizapán, fueron significativamente mayores en las líneas de maíz tolerantes que en las susceptibles a sequía.Palabras clave: Zea mays; bacterias endofíticas; diversidad bacteriana; 16S rADN.El maíz (Zea mays) es actualmente el segundo cultivo alimenticio más importante en términos de fuentes de energía y un contenido de proteína de aproximadamente 9.2% en la nutrición humana (FAO, 2016). México ocupa el séptimo lugar en producción del cereal con aproximadamente 25 millones de toneladas al año (FIRA, 2016). La productividad de esta gramínea se limita por f...

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Control of Drought Stress in Wheat Using Plant-Growth-Promoting Bacteria

Cited by 352 publications

References 38 publications

Plant growth-promoting bacteria effect in withstanding drought in wheat cultivars

Plant growth-promoting bacteria effect in withstanding drought in wheat cultivars

Effects of exogenously applied plant growth regulators in combination with PGPR on the physiology and root growth of chickpea (Cicer arietinum) and their role in drought tolerance

Bacterias endófitas de la raíz en líneas de maíces tolerantes y susceptibles a sequía

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