Exogenously applied proline as a tool to enhance water use efficiency: Case of fennel

Zali, Ali Gholami; Ehsanzadeh, Parviz

doi:10.1016/j.agwat.2017.11.023

Cited by 20 publications

(7 citation statements)

References 32 publications

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“…3f) and RWC (data not shown) for the examined fennel genotypes in the present study. Fennel genotypes with high proline and TSC accumulation capabilities (i.e., Yazd, Kashan, Shiraz, and Isfahan) were among those with the greatest RWC and leaf water potential, a finding that has been almost confirmed in previous studies (Gholami Zali and Ehsanzadeh 2018). Genotypic and species differences in the degrees and types of solutes accumulated, and thus osmotic adjustment capacities have been recognized in many plant species (Zhang et al 1999;Kumar et al 2017).…”

Section: Osmolytes and Water Relation Attributessupporting

confidence: 53%

“…1b) in this herbaceous species. Especially interesting is the low-demanding nature and stress-resilient habit of this species as revealed in the previous studies (Gholami Zali and Ehsanzadeh 2018), along with its different (i.e., compared to ordinary annual crops) production cycle (Carrubba et al 2008).…”

Section: Introductionmentioning

confidence: 85%

“…In order to measure antioxidant enzymes activities, 500 mg of leaf samples that had been obtained around the 50-70% flowering stage were homogenized in an extraction buffer, centrifuged at 15,000 rpm for 20 min at 4°C and enzyme activities were expressed according to the measured total protein content of the samples. APX activity was measured spectrophotometrically by a decrease in the absorbance at 265 nm according to method described by Gholami Zali and Ehsanzadeh (2018). CAT activity was measured by measuring consumption of H 2 O 2 using absorption by spectrophotometer at 240 nm according to the details given in the aforementioned study.…”

Section: Antioxidative Enzymes Activity and Carotenoids Measurementsmentioning

confidence: 99%

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Ratooned fennel relies on osmoregulation and antioxidants to damp seed yield decline with water limitation

Akbari-Kharaji

Ehsanzadeh

Zali

et al. 2020

Agron. Sustain. Dev.

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Fennel (Foeniculum vulgare Mill.) is a medicinal species which has not been examined as a ratoon crop. Ratooning lessens the production intensity, but the ratooned fennel seed yield and physiological processes may differ with stand age, irrigation regime, and genotype. Eleven fennel genotypes were, thus, subjected to either limited or sufficient water supply for 6 years. For each year, the crop was harvested in early autumn to measure seed yield, yield components, dry mass, and essential oil. Besides, some physiological characteristics relevant to seed yield were studied in certain years. Results indicated a biphasic behavior in seed and essential oil yields of the majority of genotypes with maximum seed yields (ranging from 2514 to 2635 kg ha −1 in different genotypes) being obtained from the well-watered plants mainly in the 4th year of harvest. Taking the period of 6 years and the two irrigation regimes together, genotypes Yazd, Kashan, and Shiraz showed a better productive performance. Meaningful positive associations were found between the seed yield and such yield components as seeds/plant and certain physiological attributes, i.e., proline and total soluble carbohydrates concentrations, water potential, relative water content, and superoxide dismutase, catalase, and ascorbate peroxidase activities. Maximum seed yields (ranging from 1605 to 1704 kg ha −1) and essential oil yields (ranging from 33.3 to 45.5 kg ha −1) of plants grown under water-limited conditions were found in genotypes that benefited more from osmoregulative and antioxidative roles of proline and the antioxidative enzymes (i.e., Shiraz, Yazd, and Kashan) and, hence, were able to withstand better against water limitation. Considering such physiological capabilities, agronomic performance, and minimum stand age effects, we discovered for the first time that certain fennel genotypes could be proposed as potential resources for growing fennel as an alternative ratooned crop for low production intensity and sustainable cropping in arid climates.

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Section: Osmolytes and Water Relation Attributessupporting

confidence: 53%

Section: Introductionmentioning

confidence: 85%

Section: Antioxidative Enzymes Activity and Carotenoids Measurementsmentioning

confidence: 99%

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Ratooned fennel relies on osmoregulation and antioxidants to damp seed yield decline with water limitation

Akbari-Kharaji

Ehsanzadeh

Zali

et al. 2020

Agron. Sustain. Dev.

Self Cite

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“…Foliar application of proline was beneficial under natural environmental circumstances, generating a substantial rise in carotenoids, polyphenols, chlorophyll, and proline. It has the potential to improve stress tolerance and thereby mitigate the negative consequences of drought stress [31]. Under saline conditions, the foliar shower of proline adjusts osmotic potential and has a crucial role in plant development in arable crops such as rice [32]), maize [33], wheat [34], and cotton [35].…”

Section: Role Of Antioxidant Defense Of Oil Palm Under Abiotic Stressmentioning

confidence: 99%

Problems and Prospects of Improving Abiotic Stress Tolerance and Pathogen Resistance of Oil Palm

Lü

Martin

Zhang

et al. 2021

Plants

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Oil palm crops are the most important determinant of the agricultural economy within the segment of oilseed crops. Oil palm growing in their natural habitats are often challenged simultaneously by multiple stress factors, both abiotic and biotic that limit crop productivity and are major constraints to meeting global food demands. The stress-tolerant oil palm crops that mitigate the effects of abiotic stresses on crop productivity are crucially needed to sustain agricultural production. Basal stem rot threatens the development of the industry, and the key to solving the problem is to breed new oil palm varieties resistant to adversity. This has created a need for genetic improvement which involves evaluation of germplasm, pest and disease resistance, earliness and shattering resistance, quality of oil, varieties for different climatic conditions, etc. In recent years, insights into physiology, molecular biology, and genetics have significantly enhanced our understanding of oil palm response towards such stimuli as well as the reason for varietal diversity in tolerance. In this review, we explore the research progress, existing problems, and prospects of oil palm stress resistance-based physiological mechanisms of stress tolerance as well as the genes and metabolic pathways that regulate stress response.

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“…Activation of the antioxidant defence and osmoprotection systems are two main drought resistance mechanisms in plants [20,21]. The overproduction of reactive oxygen species (ROS) under stress conditions is a typical tolerance response [22].…”

Section: Introductionmentioning

confidence: 99%

Morphological, Physiological, and Biochemical Responses of Zinnia to Drought Stress

Toscano

Romano

2021

Horticulturae

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Bedding plants in the nursery phase are often subject to drought stress because of the small volume of the containers and the hydraulic conductivity of organic substrates used. To analyse the morphological, physiological, and enzymatic responses of zinnia (Zinnia elegans L.) plants at different irrigation levels, four treatments were performed: irrigated at 100% (100% field capacity, FC); light deficit irrigation (75% FC), medium deficit irrigation (50% FC), and severe deficit irrigation (25% FC). The growth of zinnia was significantly influenced by drought stress treatments. Different morphological parameters (dry biomass, leaf number, root to shoot ratio (R/S)) were modified only in the more severe drought stress treatment (25% FC). The stomata density increased in 50% FC and 25% FC, while the stomata size was reduced in 25% FC. The net photosynthesis, stomatal conductance, and transpiration were reduced in 50% FC and 25% FC. The relative water content (RWC) was reduced in 25% FC. Severe drought stress (25% FC) increased proline content up to seven-fold. Catalase (CAT), peroxidase (GPX), and superoxide dismutase (SOD) activity significantly increased in 50% FC and 25% FC. Principal component analysis (PCA) showed that the morphological and physiological parameters were mostly associated with the 100% FC and 75% FC treatments of the biplot, whereas the stomata density, R/S ratio, and antioxidant enzymes (GPX, CAT) were associated with 50% FC, and proline and DPPH were associated with 25% FC, respectively.

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Exogenously applied proline as a tool to enhance water use efficiency: Case of fennel

Cited by 20 publications

References 32 publications

Ratooned fennel relies on osmoregulation and antioxidants to damp seed yield decline with water limitation

Ratooned fennel relies on osmoregulation and antioxidants to damp seed yield decline with water limitation

Problems and Prospects of Improving Abiotic Stress Tolerance and Pathogen Resistance of Oil Palm

Morphological, Physiological, and Biochemical Responses of Zinnia to Drought Stress

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