Programmed cell death is responsible for replaceable bud senescence in chestnut (Castanea mollissima BL.)

Wang, Guangpeng; Kong, Dan; Qing-xiang, Liu; Zhao, Guiling

doi:10.1007/s00299-012-1274-4

Cited by 10 publications

(11 citation statements)

References 20 publications

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“…Caspase-like proteases can be divided into three classes: metacaspases, vacuolar processing enzymes (VPEs), and saspases (Zhan et al [2012]). Some studies showed that saspases were involved in the proteolytic degradation of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) in biotic and abiotic PCD, whereas phytaspase overproducing and silenced transgenics provide evidence that phytaspase regulates PCD during both abiotic (oxidative and osmotic stresses) and biotic (virus infection) insults (Vartapetian et al [2011]). To certify the types and the roles of caspase-like protease induced by Al in peanut root tips are next important research field.…”

Section: Discussionmentioning

confidence: 99%

Aluminum induces rapidly mitochondria-dependent programmed cell death in Al-sensitive peanut root tips

Huang

et al. 2014

Bot Stud

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BackgroundAlthough many studies suggested that aluminum (Al) induced programmed cell death (PCD) in plants, the mechanism of Al-induced PCD and its effects in Al tolerance is limited. This study was to investigate the mechanism and type of Al induced PCD and the relationship between PCD and Al tolerance.ResultsIn this study, two genotypes of peanut 99-1507 (Al tolerant) and ZH2 (Al sensitive) were used to investigate Al-induced PCD. Peanut root growth inhibition induced by AlCl3 was concentration and time-dependent in two peanut varieties. AlCl3 at 100 μM could induce rapidly peanut root tip PCD involved in DNA cleavage, typical apoptotic chromatin condensation staining with DAPI, apoptosis related gene Hrs203j expression and cytochrome C (Cyt c) release from mitochondria to cytosol. Caspase3-like protease was activated by Al; it was higher in ZH2 than in 99-1507. Al increased the opening of mitochondrial permeability transition pore (MPTP), decreased inner membrane potential (ΔΨm) of mitochondria. Compared with the control, Al stress increased O2•- and H2O2 production in mitochondria. Reactive oxygen species (ROS) burst was produced at Al treatment for 4 h.ConclusionsAl-induced PCD is earlier and faster in Al-sensitive peanut cultivar than in Al-tolerant cultivar. There is a negative relationship between PCD and Al resistance. Mitochondria- dependence PCD was induced by Al and ROS was involved in this process. The mechanism can be explained by the model of acceleration of senescence under Al stress.Electronic supplementary materialThe online version of this article (doi:10.1186/s40529-014-0067-1) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Aluminum induces rapidly mitochondria-dependent programmed cell death in Al-sensitive peanut root tips

Huang

et al. 2014

Bot Stud

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“…The existence of PCD is relatively the same in animal and plant cells (Havel and Durzan 1996). PCD is directly linked with vacuolization, (deoxyribonucleic acid) DNA fragmentation, and cell shrinkage and chromatin condensation in both plants and animals (Papini et al 2011;Poór et al 2013;Wang et al 2012). Generally, PCD includes, through an apoptotic process, the degradation of DNA fragments from 50 to 200 kb.…”

Section: Introductionmentioning

confidence: 99%

Effect of Vanadium on Growth, Photosynthesis, Reactive Oxygen Species, Antioxidant Enzymes, and Cell Death of Rice

Altaf

Rehman

Imtiaz

et al. 2020

J Soil Sci Plant Nutr

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Vanadium (V) as minor concentration is present in various plants and extensively found in soils. The current study was established to assess the response of rice seedlings to different V concentrations and also investigated its toxic effect on growth, photosynthetic assimilation, relative chlorophyll content, SPAD index, ion leakage, enzyme activities, hydrogen peroxide (H 2 O 2), and cell death. The rice seeds were sown in Petri dishes for 8 days, and after that, rice seedlings were grown hydroponically in a climate-controlled growth chamber. After 15 days of V-treatment, antioxidant enzyme activities, H 2 O 2 , protein contents, photosynthetic assimilation, relative chlorophyll content, and cell death were determined by utilizing the Spectrophotometer (Lambda 25 UV/VIS Spectrophotometer), and V accumulation (roots and shoots) was determined by GFAAS (GTA 120). The obtained results showed that all V concentrations significantly decreased the biomass (dry and fresh) and root growth as a result of the reduction in total root length, root tips, root fork, root surface area, and root crossing, and V was more accumulated in roots than shoots. Besides this, enzymatic activities were significantly enhanced under V stress. The findings also confirmed that seedling exposed to V stress had lower tolerance indices, photosynthetic activity, and protein contents while the ion leakage was consistently increased by increasing the V concentrations. The viability of plant cells severely damaged in response to high V stress, and H 2 O 2 induction might be responsible for cell death. Generally, all V doses had a drastic effect on enzyme activities and caused cell death of rice plans. Moreover, the current study demonstrated that V ≥ 35 mg L −1 caused damaging effects on rice plants.

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“…PI flow cytometric assay has been widely used for the evaluation of apoptosis in different tissues 33 . Apoptotic nuclei appear as a broad hypodiploxd DNA peak, which was easily discriminable from the narrow peak of normal (diploid) DNA content in the red fluorescence channels as PI is capable of binding and labeling DNA 34 – 36 . FCM measurements was proven to be a quantitative technology to study PCD dynamics 37 .…”

Section: Discussionmentioning

confidence: 99%

Reactive oxygen species and nitric oxide induce senescence of rudimentary leaves and the expression profiles of the related genes in Litchi chinensis

et al. 2018

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Litchi is one of the most important subtropical evergreen fruit trees in southern Asia. Previous studies indicated that high-temperature conditions encourage growth of rudimentary leaves in panicles and suppress flowering. We have demonstrated that methyl viologen dichloride hydrate (MV) and sodium nitroprusside (SNP) promoted flowering in litchi partially by inhibiting the growth of rudimentary leaves via reactive oxygen species (ROS) and nitric oxide (NO). In the present study, we examined the microstructure and ultrastructure, programmed cell death (PCD) ratio, nuclei morphology of the rudimentary leaves, and the expression of senescence-related genes after the treatment with ROS or NO. The results showed that chromatins of the ROS- or NO-treated cells in the rudimentary leaves were condensed. Fusion of the cytoplasm-digesting vesicles with the vacuole and degradation of cytoplasm forming scattered debris were found in those of the treated cells. Treatment with ROS or NO increased the cell PCD ratio. Morphology of the nuclei stained by propidium iodide (PI) showed that nuclei shape became irregular after the ROS or NO treatment. Further, the expression levels of LcRboh, LcMC-1-like, and LcPirin were higher in the ROS- and NO-treated rudimentary leaves than those in the control ones, suggesting that these genes may be involved in the ROS and NO-induced senescence and abscission of the rudimentary leaves in litchi. Our results suggested that ROS and NO play an important role in inducing the senescence of the rudimentary leaves, and ROS- and NO-induced PCD may be involved in the regulation of the rudimentary leaf growth in litchi.

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Programmed cell death is responsible for replaceable bud senescence in chestnut (Castanea mollissima BL.)

Abstract: This paper first reported the occurrence of programmed cell death during the senescence of vegetative buds in a woody species, and the results extend the range of knowledge of PCD.

Cited by 10 publications

References 20 publications

Aluminum induces rapidly mitochondria-dependent programmed cell death in Al-sensitive peanut root tips

Aluminum induces rapidly mitochondria-dependent programmed cell death in Al-sensitive peanut root tips

Effect of Vanadium on Growth, Photosynthesis, Reactive Oxygen Species, Antioxidant Enzymes, and Cell Death of Rice

Reactive oxygen species and nitric oxide induce senescence of rudimentary leaves and the expression profiles of the related genes in Litchi chinensis

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