Genotype-specific response of winter wheat (Triticum aestivum L.) to irrigation and inoculation with ACC deaminase bacteria

Salem, G. I.; Stromberger, Mary E.; Byrne, Patrick F.; Manter, Daniel K.; El-Feki, Walid M.; Weir, Tiffany L.

doi:10.1016/j.rhisph.2018.08.001

Cited by 16 publications

(15 citation statements)

References 59 publications

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“…Combined application of ACC-deaminase producing PGPR Agrobacterium fabrum or Bacillus amyloliquefaciens and timber-waste BC significantly improved the growth and yield of field grown wheat under mild (3I) and severe drought (2I) conditions. Our field study results validate earlier pot study results of improved growth and yield in response to comparable drought conditions [22][23][24]. Both the PGPR strains, A. fabrum and B. amyloliquefaciens along with BC significantly enhanced root length and plant height compared to those under control condition.…”

Section: Discussionsupporting

confidence: 87%

“…Secretion of growth hormone, i.e., IAA by the A. fabrum and B. amyloliquefaciens and greater water holding capacity of BC in addition to ACC-deaminase production are the allied factors responsible for the improvement in wheat growth. The findings of previous pot studies also support this argument [22][23][24]. Xie et al [70] described IAA as a co-factor, playing a crucial role in crop growth enhancement.…”

Section: Discussionmentioning

confidence: 75%

“…However, a vital biological approach to combat drought impacts is the soil inoculation of plant growth promoting rhizobacteria (PGPR). The PGPR are frequently reported to efficiently elongate plant roots in the pot [21,22] and mitigate drought impacts in field or greenhouse conditions [23,24], and mobilize the immobile nutrients that lead to significant increases in plant vegetative growth [25] and crop yield [26,27]. PGPR produces ACC deaminase enzyme, which catabolizes stress ethylene through cleavage of ACC into α-ketobutyrate and ammonium ion (NH 4 + ) under drought stress, e.g., [28], thus reducing the level of stress ethylene [29,30].…”

Section: Introductionmentioning

confidence: 99%

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ACC Deaminase Producing PGPR Bacillus amyloliquefaciens and Agrobacterium fabrum along with Biochar Improve Wheat Productivity under Drought Stress

et al. 2019

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Drought stress retards wheat plant’s vegetative growth and physiological processes and results in low productivity. A stressed plant synthesizes ethylene which inhibits root elongation; however, the enzyme 1-Aminocyclopropane-1-Carboxylate (ACC) deaminase catabolizes ethylene produced under water stress. Therefore, the ACC deaminase producing plant growth promoting rhizobacteria (PGPR) can be used to enhance crop productivity under drought stress. Biochar (BC) is an organically active and potentially nutrient-rich amendment that, when applied to the soil, can increase pore volume, cation exchange capacity and nutrient retention and bioavailability. We conducted a field experiment to study the effect of drought tolerant, ACC deaminase producing PGPR (with and without timber waste BC) on plant growth and yield parameters under drought stress. Two PGPR strains, Agrobacterium fabrum or Bacillus amyloliquefaciens were applied individually and in combination with 30 Mg ha−1 BC under three levels of irrigation, i.e., recommended four irrigations (4I), three irrigations (3I) and two irrigations (2I). Combined application of B. amyloliquefaciens and 30 Mg ha−1 BC under 3I, significantly increased growth and yield traits of wheat: grain yield (36%), straw yield (50%), biological yield (40%). The same soil application under 2I resulted in greater increases in several of the growth and yield traits: grain yield (77%), straw yield (75%), above- and below-ground biomasses (77%), as compared to control; however, no significant increases in chlorophyll a, b or total, and photosynthetic rate and stomatal conductance in response to individual inoculation of a PGPR strain (without BC) were observed. Therefore, we suggest that the combined soil application of B. amyloliquefaciens and BC more effectively mitigates drought stress and improves wheat productivity as compared to any of the individual soil applications tested in this study.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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ACC Deaminase Producing PGPR Bacillus amyloliquefaciens and Agrobacterium fabrum along with Biochar Improve Wheat Productivity under Drought Stress

et al. 2019

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“…привлекательными агентами для разработки на их основе коммерческих биоудобрений и средств защиты растений, число которых растет ежегодно во всем мире. Однако на практике их эффективность часто варьирует в зависимости от многих факторов (характеристика штамма микроорганизма, вид растения, место его произрастания, сортовые особенности) (13,34,54,55). Для более полного использования потенциала представителей Bacillus spp.…”

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“…н а р а с т е н и я п ш е ни ц ы. На практике эффективность штаммов Bacillus spp. может варьировать в зависимости как от условий среды, так и от многих других факторов, включая генотип растений, их эколого-географическое происхождение, сортовые особенности, характеристики штаммов (34,54,55,88). Применение представителей Bacillus spp.…”

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ADAPTATION AND TOLERANCE OF WHEAT PLANTS TO DROUGHT MEDIATED BY NATURAL GROWTH REGULATORS Bacillus spp.: MECHANISMS AND PRACTICAL IMPORTANCE (review)

Lastochkina¹

2021

S-h. biol.

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Intraspecific plant–soil feedback in four tropical tree species is inconsistent in a field experiment

Eck,

Hernández Hassan,

Comita

2024

American J of Botany

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PremiseSoil microbes can influence patterns of diversity in plant communities via plant–soil feedbacks. Intraspecific plant–soil feedbacks occur when plant genotype leads to variations in soil microbial composition, resulting in differences in the performance of seedlings growing near their maternal plants versus seedlings growing near nonmaternal conspecific plants. How consistently such intraspecific plant–soil feedbacks occur in natural plant communities is unclear, especially in variable field conditions.MethodsIn an in situ experiment with four native tree species on Barro Colorado Island (BCI), Panama, seedlings of each species were transplanted beneath their maternal tree or another conspecific tree in the BCI forest. Mortality and growth were assessed at the end of the wet season (~4 months post‐transplant) and at the end of the experiment (~7 months post‐transplant).ResultsDifferences in seedling performance among field treatments were inconsistent among species and eroded over time. Effects of field environment were detected at the end of the wet season in two of the four species: Virola surinamensis seedlings had higher survival beneath their maternal tree than other conspecific trees, while seedling survival of Ormosia macrocalyx was higher under other conspecific trees. However, these differences were gone by the end of the experiment.ConclusionsOur results suggest that intraspecific plant–soil feedbacks may not be consistent in the field for tropical tree species and may have a limited role in determining seedling performance in tropical tree communities. Future studies are needed to elucidate the environmental and genetic factors that determine the incidence and direction of intraspecific plant–soil feedbacks in plant communities.

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Genotype-specific response of winter wheat (Triticum aestivum L.) to irrigation and inoculation with ACC deaminase bacteria

Cited by 16 publications

References 59 publications

ACC Deaminase Producing PGPR Bacillus amyloliquefaciens and Agrobacterium fabrum along with Biochar Improve Wheat Productivity under Drought Stress

ACC Deaminase Producing PGPR Bacillus amyloliquefaciens and Agrobacterium fabrum along with Biochar Improve Wheat Productivity under Drought Stress

ADAPTATION AND TOLERANCE OF WHEAT PLANTS TO DROUGHT MEDIATED BY NATURAL GROWTH REGULATORS Bacillus spp.: MECHANISMS AND PRACTICAL IMPORTANCE (review)

Intraspecific plant–soil feedback in four tropical tree species is inconsistent in a field experiment

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