Atuação do Sistema Embrapa de Bibliotecas e a gestão da informação científica e tecnológica: alguns aportes

Beltrao, S. L. L.; Silva, Alessandra Rodrigues da; Dantas, Jeane de Oliveira; Arruda, Rosângela Galon

doi:10.22478/ufpb.1981-0695.2018v13n2.43340

Cited by 6 publications

(10 citation statements)

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“…In plants such as sesame, stress induces a complex plant response that depends on several factors, such as duration of stress, phenological phase, soil type, and genotype [ 64 ]. Sesame bears the physiological mark of stomatal resistance, which in turn provides an extension of its tolerance to drought [ 65 ] and in concomitant response to these processes are biochemical reactions that potentiate the defense system, generating a joint protection network that aims to maintain the plant’s survival in the face of the limited conditions of its natural activities.…”

Section: Resultsmentioning

confidence: 99%

“…This crop is used in the production of various foods, in the medicinal and pharmaceutical industries, and also consumed in nature and in animal feed. It is easy to grow and tolerant to certain periods of drought, which makes it an ideal alternative for small and medium rural producers [ 19 ]. However, to achieve maximum yield, it requires well-distributed rainfall during the different phases of its cycle [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

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Bacilli Rhizobacteria as Biostimulants of Growth and Production of Sesame Cultivars under Water Deficit

Lima

Gomes

Rocha

et al. 2023

Plants

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A strategy using bacilli was adopted aiming to investigate the mitigation of the effects of water deficit in sesame. An experiment was carried out in a greenhouse with 2 sesame cultivars (BRS Seda and BRS Anahí) and 4 inoculants (pant001, ESA 13, ESA 402, and ESA 441). On the 30th day of the cycle, irrigation was suspended for eight days, and the plants were subjected to physiological analysis using an infrared gas analyzer (IRGA). On the 8th day of water suspension, leaves were collected for analysis: superoxide dismutase, catalase, ascorbate peroxidase, proline, nitrogen, chlorophyll, and carotenoids. At the end of the crop cycle, data on biomass and vegetative growth characteristics were collected. Data were submitted for variance analysis and comparison of means by the Tukey and Shapiro–Wilk tests. A positive effect of inoculants was observed for all characteristics evaluated, contributing to improvements in plant physiology, induction of biochemical responses, vegetative development, and productivity. ESA 13 established better interaction with the BRS Anahí cultivar and ESA 402 with BRS Seda, with an increase of 49% and 34%, respectively, for the mass of one thousand seeds. Thus, biological indicators are identified regarding the potential of inoculants for application in sesame cultivation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bacilli Rhizobacteria as Biostimulants of Growth and Production of Sesame Cultivars under Water Deficit

Lima

Gomes

Rocha

et al. 2023

Plants

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“…O algodoeiro herbáceo (Gossypium hirsutum L. r. latifolium H.) é uma planta que exige dias longos com muitas horas de brilho solar devido apresentar metabolismo do tipo C3, considerado pouco eficiente, além de apresentar senescência foliar quando no período de maturação dos capulhos (BELTRÃO et al, 2008). Neste sentido, o seu cultivo no semiárido Nordestino encontra fator favorável já que, segundo Silva et al (2010), a duração do comprimento do dia solar médio é de aproximadamente 12 horas na região.…”

Section: Introductionunclassified

Cultivares de algodoeiro herbáceo sob déficit hídrico aplicado em fases fenológicas

et al. 2018

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Para o uso do recurso água na agricultura procura-se uma maior eficiência devido á escassez em determinadas regiões. Objetivou-se avaliar o efeito do déficit hídrico, aplicado em diferentes fases fenológicas, sobre o crescimento, fisiologia e produção das cultivares BRS 286 e BRS 336 de algodoeiro herbáceo. O delineamento experimental foi blocos casualizados em parcelas subdivididas, com os seis regimes de déficits hídricos, aplicados em diferentes fases fenológicas do algodoeiro, formando as parcelas e, as duas cultivares de algodoeiro herbáceo, as subparcelas, em 4 repetições. Foram avaliadas as variáveis de crescimento, fisiológicas e produtividade de algodão em caroço do algodoeiro herbáceo. O déficit hídrico restringiu o crescimento de ambas as cultivares de algodoeiro herbáceo, com as fases mais sensíveis sendo as de crescimento inicial, de botão floral e de flor. O déficit de 14 dias, aplicados nas diferentes fases fenológicas, não influenciou a fotossíntese das plantas de ambas as cultivares, mas alterou a condutâncias estomática e a transpiração das mesmas. As fases fenológicas de flor e de maçã foram as mais sensíveis ao déficit hídrico por apresentarem menor produção. Os tratamentos sem déficit em todo o ciclo e com déficit nas fases de crescimento inicial e de capulho, de ambas as cultivares de algodoeiro herbáceo, permitiram produtividade satisfatória em relação à média nacional.

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“…Large-scale studies that investigate RLS etiology and the genetic variation of the causal agent are scarce in the literature. The centre of origin of cotton has not been determined, but the main centres of diversity are distributed among regions of Central America, Africa, Arabia and Australia 43 . In most of the countries within these regions, RLS is considered as a disease of secondary importance, in contrast to the present situation in Brazil.…”

Section: Discussionmentioning

confidence: 99%

Ramularia leaf spot: PCR-based methods reveal widespread distribution of Ramulariopsis pseudoglycines and limited presence of R. gossypii in Brazil

Silva

Rennó

Quitania

et al. 2023

Sci Rep

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Whilst Brazil is the fourth largest cotton producer globally, incidence of ramularia leaf spot (RLS) has decreased yield. In 2017–18 and 2018–19, ca. 300 fungal samples were collected throughout Brazil. Hyphal tip cultures were obtained for amplification of the RNA polymerase II (RPB2), 28S rRNA, the ribosomal DNA internal transcribed spacers (ITS), actin (ACT), elongation factor (EF1-α) and histone H3 (HIS3) genomic regions. Additionally, sequences of the glyceraldehyde-3-phosphate dehydrogenase (GAPDH) were obtained by nanopore sequencing and the EF1-α region was selected as a marker for rapid recognition of Ramulariopsis species. Clade assignments based on the concatenated-sequence tree were identical to those in tree generated by RPB2-sequences, as well as in an RPB2 haplotype network and an ISSR (TGTC)4 dendrogram, in identification with species-specific primers and based on morphological comparisons. Out of 267 examined isolates, 252 were identified as Ramulariopsis pseudoglycines, indicating this species as the most widespread causal agent of cotton RLS in the Brazilian growing regions. Species-specific primers developed in the study that target the EF1-α gene provide an opportunity for extensive RLS sampling worldwide to study the distribution of Ramulariopsis species. Such data will aid breeders and plant pathologists in cotton disease resistance development and fungicide resistance avoidance.

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Atuação do Sistema Embrapa de Bibliotecas e a gestão da informação científica e tecnológica: alguns aportes

Cited by 6 publications

References 0 publications

Bacilli Rhizobacteria as Biostimulants of Growth and Production of Sesame Cultivars under Water Deficit

Bacilli Rhizobacteria as Biostimulants of Growth and Production of Sesame Cultivars under Water Deficit

Cultivares de algodoeiro herbáceo sob déficit hídrico aplicado em fases fenológicas

Ramularia leaf spot: PCR-based methods reveal widespread distribution of Ramulariopsis pseudoglycines and limited presence of R. gossypii in Brazil

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