Strategies to deal with drought-stress in biological nitrogen fixation in soybean

Freitas, Vanessa Fogaça de; Cerezini, Paula; Hungría, Mariangela; Nogueira, Marco Antônio

doi:10.1016/j.apsoil.2021.104352

Cited by 28 publications

(19 citation statements)

References 90 publications

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“…Biological N fixation is a high energy-demanding process from the host plant to provide energy to the microsymbiont and carbon (C) skeletons for the N assimilation processes [ 51 , 52 ]. The energy invested in N acquisition via BNF is higher than its uptake from the soil with N-NO 3 − [ 12 ]. Nonetheless, according to Kaschuk et al [ 53 ] the sink of photoassimilation caused by the symbiosis ( Bradyrhizobium sp.)…”

Section: Discussionmentioning

confidence: 99%

“…In this process, bacteria inhabiting plant roots form nodules within the roots, and those nodules can fix atmospheric N (by converting N 2 to the usable NH 3 + form via nitrogenase enzyme complex), which is utilized by the plant in exchange for carbohydrates [ 7 , 8 ]. However, the efficiency of the N-fixing activity of the symbiotic association between plants and bacteria varies among legume species and legume-symbiont combinations, and cowpea is often characterized as a poor N-fixer compared to other legume crops [ 9 , 10 , 11 , 12 , 13 ]. It has been estimated that the amount of N fixed in different bean species, including cowpea, was low, varying between 25 and 70 kg N 2 fixed ha −1 [ 6 , 11 , 12 , 14 ], which represents a contribution between 50 and 80% of its N requirement [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, the efficiency of the N-fixing activity of the symbiotic association between plants and bacteria varies among legume species and legume-symbiont combinations, and cowpea is often characterized as a poor N-fixer compared to other legume crops [ 9 , 10 , 11 , 12 , 13 ]. It has been estimated that the amount of N fixed in different bean species, including cowpea, was low, varying between 25 and 70 kg N 2 fixed ha −1 [ 6 , 11 , 12 , 14 ], which represents a contribution between 50 and 80% of its N requirement [ 15 , 16 ]. These values are considerably lower than the amount of N fixed in soybean ( Glycine max (L.) Merrill), which can range from 80 to above 300 kg N fixed ha −1 [ 17 , 18 , 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…Plants cannot take up all the N fertilizer applied leading to impaired N use efficiency and recovery and rising environmental concerns. Furthermore, BNF is a process vulnerable to drought, a common environmental condition under tropical agriculture, and drops even before the transpiration and photosynthetic rates decrease significantly [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

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Co-Inoculation with Azospirillum brasilense and Bradyrhizobium sp. Enhances Nitrogen Uptake and Yield in Field-Grown Cowpea and Did Not Change N-Fertilizer Recovery

Galindo

Pagliari

Silva

et al. 2022

Plants

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This study was designed to investigate the effects of Azospirillum brasilense and Bradyrhizobium sp. co-inoculation coupled with N application on soil N levels and N in plants (total N, nitrate N-NO3− and ammonium N-NH4+), photosynthetic pigments, cowpea plant biomass and grain yield. An isotopic technique was employed to evaluate 15N fertilizer recovery and derivation. Field trials involved two inoculations—(i) single Bradyrhizobium sp. and (ii) Bradyrhizobium sp. + A. brasilense co-inoculation—and four N fertilizer rates (0, 20, 40 and 80 kg ha−1). The co-inoculation of Bradyrhizobium sp. + A. brasilense increased cowpea N uptake (an increase from 10 to 14%) and grain yield (an average increase of 8%) compared to the standard inoculation with Bradyrhizobium sp. specifically derived from soil and other sources without affecting 15N fertilizer recovery. There is no need for the supplementation of N via mineral fertilizers when A. brasilense co-inoculation is performed in a cowpea crop. However, even in the case of an NPK basal fertilization, applied N rates should remain below 20 kg N ha−1 when co-inoculation with Bradyrhizobium sp. and A. brasilense is performed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Co-Inoculation with Azospirillum brasilense and Bradyrhizobium sp. Enhances Nitrogen Uptake and Yield in Field-Grown Cowpea and Did Not Change N-Fertilizer Recovery

Galindo

Pagliari

Silva

et al. 2022

Plants

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“…Several abiotic stresses affect crop growth and production and increase food security risks ( Habibpourmehraban, 2022 ). Drought is one of the severe abiotic stresses which has a huge impact on the global food supply chain ( Malik et al, 2021 ; De Freitas et al, 2022 ; Muhammad et al, 2022 ). DT is an important trait that plants need to survive under DS ( Yadav et al, 2021 ; Batool et al, 2022b ; Sakoda et al, 2022 ).…”

Section: Genetic Engineering For Drought Stress Tolerance In Ramiementioning

confidence: 99%

Improving Drought Stress Tolerance in Ramie (Boehmeria nivea L.) Using Molecular Techniques

Rasheed

Jie²,

Nawaz³

et al. 2022

Front. Plant Sci.

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Ramie is one of the most significant fiber crops and contributes to good quality fiber. Drought stress (DS) is one of the most devastating abiotic factors which is accountable for a substantial loss in crop growth and production and disturbing sustainable crop production. DS impairs growth, plant water relation, and nutrient uptake. Ramie has evolved a series of defense responses to cope with DS. There are numerous genes regulating the drought tolerance (DT) mechanism in ramie. The morphological and physiological mechanism of DT is well-studied; however, modified methods would be more effective. The use of novel genome editing tools like clustered regularly interspaced short palindromic repeats (CRISPR) is being used to edit the recessive genes in crops to modify their function. The transgenic approaches are used to develop several drought-tolerant varieties in ramie, and further identification of tolerant genes is needed for an effective breeding plan. Quantitative trait loci (QTLs) mapping, transcription factors (TFs) and speed breeding are highly studied techniques, and these would lead to the development of drought-resilient ramie cultivars. The use of hormones in enhancing crop growth and development under water scarcity circumstances is critical; however, using different concentrations and testing genotypes in changing environments would be helpful to sort the tolerant genotypes. Since plants use various ways to counter DS, investigating mechanisms of DT in plants will lead to improved DT in ramie. This critical review summarized the recent advancements on DT in ramie using novel molecular techniques. This information would help ramie breeders to conduct research studies and develop drought tolerant ramie cultivars.

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Natural nodulation and nitrogen fixation of Acacia Auriculiformis grown in technosol eco-engineered from Fe ore tailings

Li,

Wu,

Liu

et al. 2023

Plant Soil

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Aims Nitrogen deficiency in eco-engineered technosol from iron (Fe) ore tailings limits the productivity of colonising soil microbes and pioneer plants, which are critical to further development of the technosol. Symbiotic biological N2 fixation may be a strategy to supply N in the moderately alkaline early technosols since native legumes such as Acacia auriculiformis are tolerant of saline and alkaline soil conditions as those in the technosol. It is hypothesized that tolerant native legume A. auriculiformis could form functional nodules to fix N2 when grown in early eco-engineered technosols. Methods A. auriculiformis growth and root nodulation in the early tailing technosols were investigated using a glasshouse experiment, and plant N2 fixation was evaluated using the 15 N natural abundance isotope method. Key factors influencing root nodulation and N2 fixation have also been evaluated, including water supply and phosphorous nutrition. Results The results indicated that A. auriculiformis grew well in the tailing technosols and naturally formed nodules with rhizobia. The nodules were functional in N2 fixation, leading to improved plant N nutrition. The nodulation and N2 fixation were severely limited by water deficiency stress. Improved phosphorous supply favoured nodulation and N2 fixation by A. auriculiformis plants under water deficiency stress. Conclusions These findings suggested that A. auriculiformis could grow in early tailings technosols and fixed N2, and proper water and phosphorous fertilizer management could improve Acacia plant’s performance and N2 fixation functions. It is possible to introduce tolerant native legumes such as A. auriculiformis to improve N supply in the early technosols.

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Strategies to deal with drought-stress in biological nitrogen fixation in soybean

Cited by 28 publications

References 90 publications

Co-Inoculation with Azospirillum brasilense and Bradyrhizobium sp. Enhances Nitrogen Uptake and Yield in Field-Grown Cowpea and Did Not Change N-Fertilizer Recovery

Co-Inoculation with Azospirillum brasilense and Bradyrhizobium sp. Enhances Nitrogen Uptake and Yield in Field-Grown Cowpea and Did Not Change N-Fertilizer Recovery

Improving Drought Stress Tolerance in Ramie (Boehmeria nivea L.) Using Molecular Techniques

Natural nodulation and nitrogen fixation of Acacia Auriculiformis grown in technosol eco-engineered from Fe ore tailings

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