Physiological and N2-fixation-related traits for tolerance to drought in soybean progenies

Cerezini, Paula; Kuwano, Biana Harumi; Neiverth, Walkyria; Grunvald, Anna Karolina; Pípolo, A. E.; Hungría, Mariangela; Nogueira, Marco Antônio

doi:10.1590/s1678-3921.pab2019.v54.00839

Cited by 7 publications

(2 citation statements)

References 21 publications

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“…Since nitrogen is considered a mobile element in the phloem of plants (Furlani, 2004;Taiz et al, 2017;Cerezini et al, 2019), after seed appearance (R5, 89 DAS) there is an increase in N content in pods (Figure 3B) related to translocation from the vegetative part, which showed a decrease in the nutrient (Figure 3A). This effect is presented in the N accumulation curves of Figure 5A, in which N content in the pods increased at the expense of that in the vegetative part, while total N in the canopy remained constant.…”

Section: Resultsmentioning

confidence: 99%

Macronutrient absorption rate of a Runner-type peanut cultivar

Bertino

Faria

Jesus

et al. 2022

Rev. bras. eng. agríc. ambient.

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Peanuts are one of the most produced legumes in the world; however, there is a lack of knowledge on their nutritional needs and the growth phases with greater demands; therefore research is required on the nutrient absorption rate of the crop. The objectives of this study were to determine the rates of absorption in the vegetative part and the pods, the accumulation of macronutrients in the vegetative part, pods, and in total, and the nutrient export to pods during the cycle of the peanut, cv Runner IAC 503, grown under full irrigation. The experiment was conducted at the Experimental Farm of the Faculty of Agrarian and Veterinary Sciences, Universidade Estadual Paulista, Jaboticabal campus, SP, Brazil, from March to August 2019 using a randomized block design, with evaluations of the macronutrient absorption rate and accumulation at 35, 49, 63, 77, 91, 105, 119, 133 and 147 days after sowing, with four replications. Higher nutritional demands of peanuts occurred between 63 and 105 days after sowing. Greater total accumulation of nutrients was reached at 118 DAS, with 234.8, 173.5, 79.0, 45.8, 23.4 and 18.8 kg ha-1 for N, K, Ca, Mg, P, and S, respectively. Exports of macronutrients contained in the pods totaled 138.8, 43.9, 14.6, 12.0, 7.3 and 5.4 kg ha-1 for N, K, P, Mg, S and Ca, respectively. Exported K in the harvest was two times greater than the applied amount at sowing, which followed the current Brazilian recommendation, causing possible depletion of this nutrient in the soil.

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Section: Resultsmentioning

confidence: 99%

Macronutrient absorption rate of a Runner-type peanut cultivar

Bertino

Faria

Jesus

et al. 2022

Rev. bras. eng. agríc. ambient.

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“…The biological N2 fixation (BNF) is one of the processes of the soybean plant most sensitive to water deficiency. Although BNF may be inhibited by water deficit, there is genetic variability in this response, which may be responsible for the differential tolerance to water stress between legumes species and between soybean genotypes (Sall and Sinclair, 1991;Serraj et al, 1999;Daryanto et al, 2015;Cerezini et al, 2019). Once a week, a complete Hoagland nutrient solution (nitrogen-free) was applied to each pot.…”

Section: Soybean Dehydration Assay For Gene Expression Analysismentioning

confidence: 99%

Molecular Characterisation of Soybean Osmotins and Their Involvement in Drought Stress Response

et al. 2021

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Osmotins are multifunctional proteins belonging to the thaumatin-like family related to plant stress responses. To better understand the functions of soybean osmotins in drought stress response, the current study presents the characterisation of four previously described proteins and a novel putative soybean osmotin (GmOLPa-like). Gene and protein structure as well as gene expression analyses were conducted on different tissues and developmental stages of two soybean cultivars with varying dehydration sensitivities (BR16 and EMB48 are highly and slightly sensitive, respectively). The analysed osmotin sequences share the conserved amino acid signature and 3D structure of the thaumatin-like family. Some differences were observed in the conserved regions of protein sequences and in the electrostatic surface potential. P21-like present the most similar electrostatic potential to osmotins previously characterised as promoters of drought tolerance in Nicotiana tabacum and Solanum nigrum. Gene expression analysis indicated that soybean osmotins were differentially expressed in different organs (leaves and roots), developmental stages (R1 and V3), and cultivars in response to dehydration. In addition, under dehydration conditions, the highest level of gene expression was detected for GmOLPa-like and P21-like osmotins in the leaves and roots, respectively, of the less drought sensitive cultivar. Altogether, the results suggest an involvement of these genes in drought stress tolerance.

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