Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (3)

Search Parameters:
Authors = Yuri Feitosa

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
11 pages, 1043 KiB  
Article
Modulation of Drought-Induced Stress in Cowpea Genotypes Using Exogenous Salicylic Acid
by Alberto Soares de Melo, Rayssa Ribeiro da Costa, Francisco Vanies da Silva Sá, Guilherme Felix Dias, Rayanne Silva de Alencar, Priscylla Marques de Oliveira Viana, Tayd Dayvison Custódio Peixoto, Janivan Fernandes Suassuna, Marcos Eric Barbosa Brito, Rener Luciano de Souza Ferraz, Patrícia da Silva Costa, Yuri Lima Melo, Élida Barbosa Corrêa, Claudivan Feitosa de Lacerda and José Dantas Neto
Plants 2024, 13(5), 634; https://doi.org/10.3390/plants13050634 - 26 Feb 2024
Cited by 5 | Viewed by 1865
Abstract
Plant endogenous mechanisms are not always sufficient enough to mitigate drought stress, therefore, the exogenous application of elicitors, such as salicylic acid, is necessary. In this study, we assessed the mitigating action of salicylic acid (SA) in cowpea genotypes under drought conditions. An [...] Read more.
Plant endogenous mechanisms are not always sufficient enough to mitigate drought stress, therefore, the exogenous application of elicitors, such as salicylic acid, is necessary. In this study, we assessed the mitigating action of salicylic acid (SA) in cowpea genotypes under drought conditions. An experiment was conducted with two cowpea genotypes and six treatments of drought stress and salicylic acid (T1 = Control, T2 = drought stress (stress), T3 = stress + 0.1 mM of SA, T4 = stress + 0.5 mM of SA, T5 = stress + 1.0 mM of SA, and T6 = stress + 2.0 mM of SA). Plants were evaluated in areas of leaf area, stomatal conductance, photosynthesis, proline content, the activity of antioxidant enzymes, and dry grain production. Drought stress reduces the leaf area, stomatal conductance, photosynthesis, and, consequently, the production of both cowpea genotypes. The growth and production of the BRS Paraguaçu genotype outcompetes the Pingo de Ouro-1-2 genotype, regardless of the stress conditions. The exogenous application of 0.5 mM salicylic acid to cowpea leaves increases SOD activity, decreases CAT activity, and improves the production of both genotypes. The application of 0.5 mM of salicylic acid mitigates drought stress in the cowpea genotype, and the BRS Paraguaçu genotype is more tolerant to drought stress. Full article
(This article belongs to the Section Plant Response to Abiotic Stress and Climate Change)
Show Figures

Figure 1

14 pages, 10720 KiB  
Article
Importance of Protected Areas by Brazilian States to Reduce Deforestation in the Amazon
by Marcos V. L. Sousa, Silas N. Melo, Juciana C. B. Souza, Carlos F. A. Silva, Yuri Feitosa and Lindon F. Matias
ISPRS Int. J. Geo-Inf. 2023, 12(5), 190; https://doi.org/10.3390/ijgi12050190 - 4 May 2023
Cited by 6 | Viewed by 3585
Abstract
Protected areas (PAs) help in strategies for maintaining biodiversity and inhibiting deforestation of the Amazon rainforest. However, there are few studies that evaluate the effectiveness of lands protected by states (or federation units). Our goal was to compare land use change over 35 [...] Read more.
Protected areas (PAs) help in strategies for maintaining biodiversity and inhibiting deforestation of the Amazon rainforest. However, there are few studies that evaluate the effectiveness of lands protected by states (or federation units). Our goal was to compare land use change over 35 years in state-level PAs with another area of protection, both in the Amazon of the Maranhão state, Brazil. We employed remote sensing techniques, the geographic information system (GIS), and statistical analysis with the use of analyses of covariance (ANCOVAS) to analyze the presence of the classes of land use and change in the PA. The results indicate that the state PAs were effective in preserving forest cover and decelerating grazing. The implications of the results are discussed in the context of supporting public policies at the state level for the protection of the Amazon. Full article
(This article belongs to the Special Issue Geomatics in Forestry and Agriculture: New Advances and Perspectives)
Show Figures

Figure 1

16 pages, 741 KiB  
Article
Osmoregulatory and Antioxidants Modulation by Salicylic Acid and Methionine in Cowpea Plants under the Water Restriction
by Auta Paulina da Silva Oliveira, Yuri Lima Melo, Rayanne Silva de Alencar, Pedro Roberto Almeida Viégas, Guilherme Felix Dias, Rener Luciano de Souza Ferraz, Francisco Vanies da Silva Sá, José Dantas Neto, Ivomberg Dourado Magalhães, Hans Raj Gheyi, Claudivan Feitosa de Lacerda and Alberto Soares de Melo
Plants 2023, 12(6), 1341; https://doi.org/10.3390/plants12061341 - 16 Mar 2023
Cited by 12 | Viewed by 2102
Abstract
Global climate changes have intensified water stress in arid and semi-arid regions, reducing plant growth and yield. In this scenario, the present study aimed to evaluate the mitigating action of salicylic acid and methionine in cowpea cultivars under water restriction conditions. An experiment [...] Read more.
Global climate changes have intensified water stress in arid and semi-arid regions, reducing plant growth and yield. In this scenario, the present study aimed to evaluate the mitigating action of salicylic acid and methionine in cowpea cultivars under water restriction conditions. An experiment was conducted in a completely randomized design with treatments set up in a 2 × 5 factorial arrangement corresponding to two cowpea cultivars (BRS Novaera and BRS Pajeú) and five treatments of water replenishment, salicylic acid, and methionine. After eight days, water stress decreased the Ψw, leaf area, and fresh mass and increased the total soluble sugars and catalase activity in the two cultivars. After sixteen days, water stress increased the activity of the superoxide dismutase and ascorbate peroxidase enzymes and decreased the total soluble sugars content and catalase activity of BRS Pajeú plants. This stress response was intensified in the BRS Pajeú plants sprayed with salicylic acid and the BRS Novaera plants with salicylic acid or methionine. BRS Pajeú is more tolerant to water stress than BRS Novaera; therefore, the regulations induced by the isolated application of salicylic acid and methionine were more intense in BRS Novaera, stimulating the tolerance mechanism of this cultivar to water stress. Full article
(This article belongs to the Special Issue Horticultural Crops under Stresses)
Show Figures

Figure 1

Back to TopTop