Water-deficit tolerance induction during germination of Jalo Precoce bean (Phaseolus vulgaris L.) cultivar

Yamamoto, Cláudia Jaqueline Tome; Leite, Rafael Gervasoni Ferreira; Minamiguchi, Joice Yuri; Braga, Inaê; Neto, Nelson Barbosa Machado; Custódio, Ceci Castilho

doi:10.1007/s11738-014-1659-9

Cited by 8 publications

(8 citation statements)

References 30 publications

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“…In the present study, the decrease in water availability gradually increased the concentration of free proline in the leaves (PRO L) of the cowpea cultivars (Figure 4, B, D, and F), regardless of the conditioning, which is consistent with the behavior observed in various crops subjected to water deficit, which include cowpea (COSTA et al, 2011;SILVA, 2014), common bean (AGOSTINI; MACHADO-NETO; CUSTÓDIO, 2013;YAMAMOTO et al, 2014), pigeon pea (MONTEIRO et al, 2014), and sunflower (BALOĞLU et al, 2012).…”

Section: Figure 2 Seedling Height -Sh (A C and E) Total Dry Phytomsupporting

confidence: 89%

“…In comparison to ED, the IPN treatment improved the PRO L accumulation in the cowpea cultivars, suggesting that PN participates in the activation of the osmoregulatory mechanism of the crop. A similar behavior was observed in common bean plants exposed to water deficit induced by PEG (AGOSTINI; MACHADO-NETO; CUSTÓDIO, 2013;YAMAMOTO et al, 2014).…”

Section: Figure 2 Seedling Height -Sh (A C and E) Total Dry Phytomsupporting

confidence: 69%

“…The effect of different water potentials on the physiology and morphology of various species, such as common bean (CUSTÓDIO; SALOMÃO; MACHADO NETO, 2009;YAMAMOTO et al, 2014), wheat (GIROTTO et al, 2012), and sunflower (HÄTER et al, 2014) has been intensively studied in order to elucidate the effects of water deficiency, as well as the mechanisms of response to the water stress. The authors, evaluating the effect of different water potentials during germination and initial growth stages, observed a decrease in growth with an increase in water restriction, a behavior explained by the reduction in cell elongation, with a consequent increase in the synthesis of the secondary wall under water stress (CARVALHO; NAKAGAWA, 2000).…”

Section: Resultsmentioning

confidence: 99%

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Genotypic Variation on the Antioxidative Response of Cowpeacultivars Exposed to Osmotic Stress

et al. 2017

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-The cowpea [Vigna unguiculata (L.) Walp.], also known as cowpea, is of fundamental socioeconomic importance to the northeast of Brazil, and has become one of the main sources of protein in the diet of the rural population. However, in this region, it has become necessary to identify genotypes that are better adapted to drought. In addition, research is needed regarding the action of substances that promote tolerance to stress factors. The aim of this study was to evaluate the antioxidative response of cowpea cultivars under osmotic stress conditions using potassium nitrate as an attenuator. Five osmotic potentials were tested in the substrate (0.0, −0.2, −0.4, −0.6, and −0.8 MPa), and three seed treatments (pre-soaking in distilled water, pre-soaking in potassium nitrate, and without pre-soaking) were tested in three cowpea cultivars (BRS Itaim, BRS Aracê, and BRS Potengi). The design was randomized with 45 treatments and four replications. The data were submitted to analysis of variance (P < 0.05), and in cases of significance, regression analysis was conducted to quantitate the factors. Our results indicate that an increase in proline content in cowpea plants may be seen as indicative of the intensity of water stress on germination and the initial stages of growth of the plant. The BRS Itaim cultivar best tolerates drought conditions with the application of potassium nitrate, given the increased activity of antioxidant enzymes such as superoxide dismutase, catalase, and ascorbate peroxidase.Keywords: Vigna unguiculata. Enzymes. Catalase. Hydrical stress. VARIAÇÃO GENOTÍPICA NA RESPOSTA ANTIOXIDATIVA DE CULTIVARES DE FEIJÃO-CAUPI EXPOSTOS AO ESTRESSE OSMÓTICORESUMO -O feijão-caupi [Vigna unguiculata (L.) Walp.], também conhecido como feijão macassar, representa fundamental importância socioeconômica para o Nordeste do Brasil, constituindo-se como uma das principais fontes proteicas na alimentação da população rural. Todavia, nessa região é necessário identificar genótipos mais adaptados ao déficit hídrico, bem como conhecer a ação de substâncias promotoras de tolerância a fatores de estresse. O objetivo desse trabalho foi avaliar a resposta antioxidativa de cultivares feijão-caupi sob condições de estresse osmótico, utilizando como atenuador o nitrato de potássio. Foram testados cinco potenciais osmóticos no substrato (0,0; -0,2; -0,4; -0,6 e -0,8 MPa) e três tratamentos de sementes (pré-embebição em água destilada; pré-embebição em nitrato de potássio e sem pré-embebição) em três cultivares (BRS Itaim, BRS Aracê e BRS Potengi). Foi adotado o delineamento inteiramente casualizado, com quatro repetições e sementes por repetição. Os dados obtidos foram submetidos à análise de variância (P<0,05) e nos casos de significância foi realizada a análise de regressão para fator de natureza quantitativa. Os resultados indicam que um aumento no teor de prolina em feijão-caupi pode ser visto como indicativo da intensidade do estresse hídrico na germinação e nos estágios iniciais de crescimento da planta. A cultiv...

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Section: Figure 2 Seedling Height -Sh (A C and E) Total Dry Phytomsupporting

confidence: 89%

Section: Figure 2 Seedling Height -Sh (A C and E) Total Dry Phytomsupporting

confidence: 69%

Section: Resultsmentioning

confidence: 99%

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Genotypic Variation on the Antioxidative Response of Cowpeacultivars Exposed to Osmotic Stress

et al. 2017

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“…Interestingly, seedlings treated with the combination of SA and WHC 100% exhibited higher shoot length (up 12%). Previous works indicate that seedling performance is improved by SA priming in wheat and bean seedlings (Hayat et al, 2008;Agostini et al, 2013;Yamamoto et al, 2014). This is due to the increase in the activity of many enzymes involved in the metabolism of carbohydrates, proteins and lipids, involved in the mobilization of stored reserves condition that allows the early and superior emergence of seedlings (Varier et al, 2010;Sharma et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Seed priming with salicylic acid potentiates water restriction-induced effects in tomato seed germination and early seedling growth

et al. 2020

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Seed priming with salicylic acid (SA) has been described as a method with potential to improve seed germination under unfavorable conditions. The present study aimed to evaluate the ability of seed priming with SA to attenuate the impact of water restriction during germination and early seedling growth of tomato. Seeds were subjected to different concentrations of SA (0, 25 and 50 µM) and sowed on substrates at different percentages of the water holding capacity (20, 30, 40 and 100%). The following variables were evaluated: germination, first count of germination, germination speed index, shoots/root length and dry mass, superoxide dismutase, ascorbate peroxidase and catalase activities, contents of hydrogen peroxide and of malondialdehyde. Water restriction significantly decreased the variables related to germination and seedling performance. Despite increasing germination speed and seedling development when combined with well-irrigated conditions, priming with SA negatively impacted those characteristics under water deficit conditions. That was through increases in superoxide dismutase activity and H2O2 accumulation. Thus, it was concluded that seed priming with SA does not improve tomato seed germination and early seedling growth under water deficit.

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“…The SA application in the seed imbibition for a certain time, usually hours (Agostini, Machado, Neto, & Custódio, 2013;Yamamoto et al, 2014) is a common procedure used in scientific researches. In this case, the SA is absorbed along with the water during the beginning of the seed soaking process and then the seeds are submitted to germination in substrates with SA absence.…”

Section: Introductionmentioning

confidence: 99%

Physiological Quality of Common Bean Seeds Subjected to Different Concentrations of Salicylic Acid

Fernandes¹,

Nunes²,

Roso³

et al. 2018

JAS

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Salicylic acid acts on several plant physiological processes. Therefore, the aim of this study was to determine if salicylic acid interferes on the physiological quality of common bean seeds soaked with different concentrations by testing two seed imbibition methodologies. Common bean seeds of the cultivars Fepagro 26 and Predileto were utilized. The seeds were soaked in solutions of salicylic acid with concentrations of zero, 250, 500, 750, 1,000, 3,000 and 5,000 μM. Seed imbibition occurred in two ways: (1) germination paper moistened with salicylic acid solutions, and (2) seed imbibition in salicylic acid solutions in plastic boxes for 24 hours and subsequent sowing on germination paper moistened with distilled water. The experiment was maintained in a germination incubator under 25 °C temperature and with constant light. The number of normal seedlings (first count), length, fresh and dry matter of seedlings were determined on the fifth day after sowing. Germination percentage was assessed nine days after sowing. The study was performed in a completely randomized design with four replicates and 50 seeds were used for each treatment. Regression analysis was performed for salicylic acid concentrations, with no comparison of cultivars and seed imbibition methods. Salicylic acid in concentrations up to 1,000 μM does not negatively affect the common bean seed germination of the cultivars Fepagro 26 and Predileto, using seed soaking for 24 hours and imbibition in the germination paper. Concentrations of salicylic acid up to 1,000 μM and seed imbibition for 24 hours do not affect the vigor (first count) of the two common bean cultivars.

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Water-deficit tolerance induction during germination of Jalo Precoce bean (Phaseolus vulgaris L.) cultivar

Cited by 8 publications

References 30 publications

Genotypic Variation on the Antioxidative Response of Cowpeacultivars Exposed to Osmotic Stress

Genotypic Variation on the Antioxidative Response of Cowpeacultivars Exposed to Osmotic Stress

Seed priming with salicylic acid potentiates water restriction-induced effects in tomato seed germination and early seedling growth

Physiological Quality of Common Bean Seeds Subjected to Different Concentrations of Salicylic Acid

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