ABA-dependent amine oxidases-derived H<sub>2</sub>O<sub>2</sub> affects stomata conductance

Konstantinos, Paschalidis A; Toumi, Imene; Moschou, Panagiotis N.; Roubelakis‐Angelakis, Kalliopi A.

doi:10.4161/psb.5.9.12679

Cited by 39 publications

(32 citation statements)

References 20 publications

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“…deltoidea plants. Contradictory results reported by Konstantinos et al [24], stated that amine oxidase was produced by H 2 O 2 to stimulate the stomatal closure in Vitis vinifera plants. In their study, the concentration amount which created the negative impact on the stomatal conductance of plants was not clear.…”

Section: Discussionmentioning

confidence: 77%

Influence of Exogenous Hydrogen Peroxide on Plant Physiology, Leaf Anatomy and Rubisco Gene Expression of the Ficus deltoidea Jack var. Deltoidea

et al. 2020

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This study was carried out to investigate the regulatory effects of hydrogen peroxide (H2O2) on the growth, photosynthesis, biochemical properties, leaf anatomy and Rubisco gene expression in Ficus deltoidea var. deltoidea, a slow-growing medicinal herb. Results showed that 20-mM H2O2 treatment increased plant height, net photosynthetic rate, stomatal conductance and chlorophyll content of the plants by 10%, 20%, 127% and 57%, respectively, than a control plant. In addition, 20 mM H2O2 treatment significantly increased the carotene, total phenolic, total flavonoid and total sugar content than the control plant. The applications of H2O2 did not produce any negative effects on the leaf area, chlorophyll fluorescence, quantum yield or antioxidant activity of F. deltoidea plants. In regard to leaf anatomy, it was observed that the applications of H2O2 at 15 mM significantly improved cellular structure, leaf veins and promoted cell proliferation. Treated leaves developed a palisade layer, thickened leaf surface, the widest stomatal openings and a well-developed vascular bundle when compared to the control plant. Employing reverse transcription polymerase chain reaction (RT-PCR), the study showed that the Rubisco gene was expressed at a higher level in 15 mM H2O2 treatments than in 20 mM H2O2 treatments. The results indicate that H2O2 increased the Rubisco expression ratio up to 16-fold when compared to the untreated plants. It was conclusive that spraying 15 mM and 20 mM H2O2 twice a week enhanced growth, photosynthesis, the stomatal aperture, improved leaf anatomy and helped to regulate the expression of the Rubisco gene.

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Section: Discussionmentioning

confidence: 77%

Influence of Exogenous Hydrogen Peroxide on Plant Physiology, Leaf Anatomy and Rubisco Gene Expression of the Ficus deltoidea Jack var. Deltoidea

et al. 2020

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“…The characterization of the morphological and physiological cultivar traits is based on specific plant developmental stages and ontogeny,[ 51 ] related to the performance of a specific plant, such as its ability to resist stress conditions. [ 52 ] In this regard, we excluded any possible developmental variation among the three cultivars by taking homogeneous leaf samples from trees of similar age with specific morphological and physiological appearance. Unlike the Surri variety, which has asymmetric and violet ripe fruits, the NB and NM varieties differ in specific characters, such as leaf shape, oil properties and fatty-acid composition [ 53 ] and different sensitivity to pests.…”

Section: Resultsmentioning

confidence: 99%

Molecular characterization of three common olive (Olea europaeaL.) cultivars in Palestine, using simple sequence repeat (SSR) markers

Obaid

Abu-Qaoud

Arafeh

2014

Biotechnology & Biotechnological Equipment

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Eight accessions of olive trees from three common varieties in Palestine, Nabali Baladi, Nabali Mohassan and Surri, were genetically evaluated using five simple sequence repeat (SSR) markers. A total of 17 alleles from 5 loci were observed in which 15 (88.2%) were polymorphic and 2 (11.8%) were monomorphic. An average of 3.4 alleles per locus was found ranging from 2.0 alleles with the primers GAPU-103 and DCA-9 to 5.0 alleles with U9932 and DCA-16. The smallest amplicon size observed was 50 bp with the primer DCA-16, whereas the largest one (450 bp) with the primer U9932. Cluster analysis with the unweighted pair group method with arithmetic average (UPGMA) showed three clusters: a cluster with four accessions from the ‘Nabali Baladi’ cultivar, another cluster with three accessions that represents the ‘Nabali Mohassen’ cultivar and finally the ‘Surri’ cultivar. The similarity coefficient for the eight olive tree samples ranged from a maximum of 100% between two accessions from Nabali Baladi and also in two other samples from Nabali Mohassan, to a minimum similarity coefficient (0.315) between the Surri and two Nabali Baladi accessions. The results in this investigation clearly highlight the genetic dissimilarity between the three main olive cultivars that have been misidentified and mixed up in the past, based on conventional morphological characters.

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“…In Spd treated leaf epidermis, Spd induced stomata closure, which was restricted by application of aminoguanidine and guazatine, the two well-known inhibitors of polyamine oxidases. Additionally, post-treatment with Spd, H 2 O 2 was shown to be localized particularly in guard cells, suggesting the protective role of polyamines and polyamine oxidases in plant temperature/water homeostasis via stomata [164]. Reductions in the activities of POX and IAA oxidase enzymes due to arginine or Put (0.0, 1.25 and 2.5 mM) treated plants prior to HT (35 ± 2 °C) resulted in significant increases in SOD and CAT activities relative to the plants exposed to HT stress alone [149].…”

Section: Use Of Exogenous Protectants In Mitigating Heat-induced Dmentioning

confidence: 99%

Physiological, Biochemical, and Molecular Mechanisms of Heat Stress Tolerance in Plants

Hasanuzzaman

Nahar

Alam

et al. 2013

IJMS

1,650

985

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High temperature (HT) stress is a major environmental stress that limits plant growth, metabolism, and productivity worldwide. Plant growth and development involve numerous biochemical reactions that are sensitive to temperature. Plant responses to HT vary with the degree and duration of HT and the plant type. HT is now a major concern for crop production and approaches for sustaining high yields of crop plants under HT stress are important agricultural goals. Plants possess a number of adaptive, avoidance, or acclimation mechanisms to cope with HT situations. In addition, major tolerance mechanisms that employ ion transporters, proteins, osmoprotectants, antioxidants, and other factors involved in signaling cascades and transcriptional control are activated to offset stress-induced biochemical and physiological alterations. Plant survival under HT stress depends on the ability to perceive the HT stimulus, generate and transmit the signal, and initiate appropriate physiological and biochemical changes. HT-induced gene expression and metabolite synthesis also substantially improve tolerance. The physiological and biochemical responses to heat stress are active research areas, and the molecular approaches are being adopted for developing HT tolerance in plants. This article reviews the recent findings on responses, adaptation, and tolerance to HT at the cellular, organellar, and whole plant levels and describes various approaches being taken to enhance thermotolerance in plants.

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ABA-dependent amine oxidases-derived H₂O₂ affects stomata conductance

Cited by 39 publications

References 20 publications

Influence of Exogenous Hydrogen Peroxide on Plant Physiology, Leaf Anatomy and Rubisco Gene Expression of the Ficus deltoidea Jack var. Deltoidea

Influence of Exogenous Hydrogen Peroxide on Plant Physiology, Leaf Anatomy and Rubisco Gene Expression of the Ficus deltoidea Jack var. Deltoidea

Molecular characterization of three common olive (Olea europaeaL.) cultivars in Palestine, using simple sequence repeat (SSR) markers

Physiological, Biochemical, and Molecular Mechanisms of Heat Stress Tolerance in Plants

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ABA-dependent amine oxidases-derived H2O2 affects stomata conductance

Cited by 39 publications

References 20 publications

Influence of Exogenous Hydrogen Peroxide on Plant Physiology, Leaf Anatomy and Rubisco Gene Expression of the Ficus deltoidea Jack var. Deltoidea

Influence of Exogenous Hydrogen Peroxide on Plant Physiology, Leaf Anatomy and Rubisco Gene Expression of the Ficus deltoidea Jack var. Deltoidea

Molecular characterization of three common olive (Olea europaeaL.) cultivars in Palestine, using simple sequence repeat (SSR) markers

Physiological, Biochemical, and Molecular Mechanisms of Heat Stress Tolerance in Plants

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ABA-dependent amine oxidases-derived H₂O₂ affects stomata conductance