Sensitivity and biochemical mechanisms of sunflower genotypes exposed to saline and water stress

Barros, Cibelley Vanúcia Santana Dantas; Melo, Yuri Lima; Souza, Matheus de Freitas; Silva, Daniel Valadão; Macêdo, Cristiane Elizabeth Costa de

doi:10.1007/s11738-019-2953-3

Cited by 13 publications

(6 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, another indicator of salt stress is cell membrane injury and this can be determined by electrolyte leakage and water loss. For example, electrolyte leakage of sunflower increases on 100 mM NaCl application for 2d [48]. Moreover, lipid peroxidation indicators such as MDA content increase under salinity stress.…”

Section: Indicators For Salt Stress In Plantsmentioning

confidence: 99%

A Review on Plant Responses to Salt Stress and Their Mechanisms of Salt Resistance

et al. 2021

View full text Add to dashboard Cite

Nowadays, crop insufficiency resulting from soil salinization is threatening the world. On the basis that soil salinization has become a worldwide problem, studying the mechanisms of plant salt tolerance is of great theoretical and practical significance to improve crop yield, to cultivate new salt-tolerant varieties, and to make full use of saline land. Based on previous studies, this paper reviews the damage of salt stress to plants, including suppression of photosynthesis, disturbance of ion homeostasis, and membrane peroxidation. We have also summarized the physiological mechanisms of salt tolerance, including reactive oxygen species (ROS) scavenging and osmotic adjustment. Four main stress-related signaling pathways, salt overly sensitive (SOS) pathway, calcium-dependent protein kinase (CDPK) pathway, mitogen-activated protein kinase (MAPKs) pathway, and abscisic acid (ABA) pathway, are included. We have also enumerated some salt stress-responsive genes that correspond to physiological mechanisms. In the end, we have outlined the present approaches and techniques to improve salt tolerance of plants. All in all, we reviewed those aspects above, in the hope of providing valuable background knowledge for the future cultivation of agricultural and forestry plants.

show abstract

Section: Indicators For Salt Stress In Plantsmentioning

confidence: 99%

A Review on Plant Responses to Salt Stress and Their Mechanisms of Salt Resistance

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Compared with the control plants, reductions by 15.4, 21.5, 1.45, and 40.4%, respectively, were recorded in H. perforatum leaves. In previous studies, drought stress has been shown to reduce plant growth [16,19,33]. Growth reduction might have been due to the restricted water uptake and reduced water content [34].…”

Section: Resultsmentioning

confidence: 94%

Kuraklık Stresi Altında Sarı Kantaronun (Hypericum perforatum L.) Fizikokimyasal ve Antioksidan Tepkileri

Torun

Eroğlu

YALÇIN

et al. 2021

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

View full text Add to dashboard Cite

This study investigated the effects of drought stress on the physiological and biochemical responses of the medicinal and aromatic plant Hypericum perforatum (St. John's Wort). Changes were determined in leaf length, relative water content (RWC), osmotic potential, chlorophyll fluorescence (Fv/Fm), lipid peroxidation (TBARS), hydrogen peroxide (H2O2), and proline content as well as in the antioxidant system enzyme activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POX), ascorbate peroxidase (APX), and glutathione reductase (GR). These responses were examined in relation to the tolerance of drought stress in H. perforatum. Ninety-dayold seedlings were subjected to drought for three weeks. The physiological parameters of leaf length, RWC, Fv/Fm, and osmotic potential were reduced under drought. The H2O2, TBARS, and proline levels were increased significantly under drought stress. Moreover, the proline content increase was greatly pronounced (25.9-fold) compared to the control groups. The high accumulation of proline may have resulted from the 83.8% leaf RWC still remaining under drought stress. On the other hand, the SOD, CAT, and GR enzyme activities were enhanced, whereas the POX and APX activities were reduced. The results indicate that improved tolerance to drought stress in H. perforatum plants may be accomplished through increased capacity of the antioxidative defense system.

show abstract

“…Some mechanisms by which some sunflower genotypes are tolerant to salt stress were presented by Barros et al (2019). They observed the accumulation of soluble solutes capable of reducing the water potential of plant cells in the sunflower genotypes Catissol 01 and Helio 253 in the presence of a high concentration of NaCl.…”

Section: Discussionmentioning

confidence: 99%

“…The suitability of sunflowers for small properties is due to their various uses, such as the production of grains and oil, in floriculture, and as an important forage species for honey-producing bees. This crop is also an economical alternative in crop rotation systems in grain-producing regions (Glovatski and Raiher 2013;Bezerra et al 2014;Gomes et al 2017;Castro and Leite 2018;Barros et al 2019).…”

Section: Productive Characteristics Of Sunflower Genotypes Irrigated ...mentioning

confidence: 99%

Productive characteristics of sunflower genotypes irrigated with different levels of saline water

et al. 2022

View full text Add to dashboard Cite

Sunflower is suitable for family farmers from Northeast Brazil who are benefited by the production of grain and oil and is adequate for crop rotation and for honey production. The need for irrigation in this region leads to the realization of this study for evaluating the production components of four sunflower genotypes irrigated with different levels of water salinity. The study was carried out in the municipality of Remigio, Paraíba, Brazil, using a randomized block with split plots experimental design in a 5 x 4 factorial arrangement. Treatments consisted of five electrical conductivity levels of the irrigation water at 25 °C (L1 - 0.14 (reservoir water), L2 - 1.50, L3 - 2.50, L4 - 3.50, and L5 - 4.50 dS m- 1), and four sunflower genotypes (C1 - Embrapa 122-V2000, C2 - Olisun 03, C3 - AG 963, and C4 - Multissol) with three replicates. The irrigation water salinity levels tested did not influence the variables studied. Different values of the variables among sunflower genotypes were due to characteristics inherent to each genotype. Sunflower genotype Olisun 03 presented the highest oil content, while the lowest content was observed in Multissol.

show abstract

Sensitivity and biochemical mechanisms of sunflower genotypes exposed to saline and water stress

Cited by 13 publications

References 47 publications

A Review on Plant Responses to Salt Stress and Their Mechanisms of Salt Resistance

A Review on Plant Responses to Salt Stress and Their Mechanisms of Salt Resistance

Kuraklık Stresi Altında Sarı Kantaronun (Hypericum perforatum L.) Fizikokimyasal ve Antioksidan Tepkileri

Productive characteristics of sunflower genotypes irrigated with different levels of saline water

Contact Info

Product

Resources

About