1
|
Santos DI, Pinto CA, Corrêa‐Filho LC, Saraiva JA, Vicente AA, Moldão‐Martins M. Effect of moderate hydrostatic pressures on the enzymatic activity and bioactive composition of pineapple by‐products. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.13537] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Diana I. Santos
- LEAF, Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia Universidade de Lisboa Lisbon Portugal
| | - Carlos A. Pinto
- QOPNA & LAQV‐REQUIMTE, Química Orgânica, Produtos Naturais e Agroalimentares, Departamento de Química Universidade de Aveiro, Campus Universitário de Santiago Aveiro Portugal
| | - Luiz C. Corrêa‐Filho
- LEAF, Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia Universidade de Lisboa Lisbon Portugal
| | - Jorge A. Saraiva
- QOPNA & LAQV‐REQUIMTE, Química Orgânica, Produtos Naturais e Agroalimentares, Departamento de Química Universidade de Aveiro, Campus Universitário de Santiago Aveiro Portugal
| | - António A. Vicente
- CEB, Centre of Biological Engineering University of Minho Braga Portugal
| | - Margarida Moldão‐Martins
- LEAF, Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia Universidade de Lisboa Lisbon Portugal
| |
Collapse
|
2
|
Yan JJ, Tong ZJ, Liu YY, Lin ZY, Long Y, Han X, Xu WN, Huang QH, Tao YX, Xie BG. The NADPH oxidase in Volvariella volvacea and its differential expression in response to mycelial ageing and mechanical injury. Braz J Microbiol 2019; 51:87-94. [PMID: 31667800 DOI: 10.1007/s42770-019-00165-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 04/29/2019] [Indexed: 02/03/2023] Open
Abstract
NADPH oxidases are enzymes that have been reported to generate reactive oxygen species (ROS) in animals, plants and many multicellular fungi in response to environmental stresses. Six genes of the NADPH oxidase complex components, including vvnoxa, vvnoxb, vvnoxr, vvbema, vvrac1 and vvcdc24, were identified based on the complete genomic sequence of the edible fungus Volvariella volvacea. The number of vvnoxa, vvrac1, vvbema and vvcdc24 transcripts fluctuated with ageing, and the gene expression patterns of vvnoxa, vvrac1 and vvbema were significantly positively correlated. However, the expression of vvnoxb and vvnoxr showed no significant difference during ageing. In hyphae subjected to mechanical injury stress, both O2- and H2O2 concentrations were increased. The expression of vvnoxa, vvrac1, vvbema and vvcdc24 was substantially upregulated, but vvnoxb and vvnoxr showed no response to mechanical injury stress at the transcriptional level. Additionally, the transcription of vvnoxa, vvrac1, vvbema and vvcdc24 could be repressed when the intracellular ROS were eliminated by diphenyleneiodonium (DPI) chloride and reduced glutathione (GSH) treatments. These results indicated a positive feedback loop involving NADPH oxidase and intracellular ROS, which might be the reason for the oxidative burst during injury stress.
Collapse
Affiliation(s)
- Jun-Jie Yan
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Zong-Jun Tong
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yuan-Yuan Liu
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Zi-Yan Lin
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Ying Long
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Xing Han
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Wei-Nan Xu
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Qian-Hui Huang
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Yong-Xin Tao
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Bao-Gui Xie
- Mycological Research Center, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
| |
Collapse
|
3
|
Lu L, Ji L, Ma Q, Yang M, Li S, Tang Q, Qiao L, Li F, Guo Q, Wang C. Depression of Fungal Polygalacturonase Activity in Solanum lycopersicum Contributes to Antagonistic Yeast-Mediated Fruit Immunity to Botrytis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3293-3304. [PMID: 30785743 DOI: 10.1021/acs.jafc.9b00031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The acquisition of susceptibility to necrotrophy over the course of ripening is one of the critical factors limiting shelf life. In this study, phytopathology and molecular biology were employed to explore the roles of pectinase in fruit susceptibility and ripening. Solanum lycopersicum fruit softened dramatically from entirely green to 50% red, which was accompanied by a continuously high expressed SlPG2 gene. The necrotrophic fungus Botrytis cinerea further activated the expression of SlPGs and SlPMEs to accelerate cell wall disassembly, while most of the polygalacturonase inhibitor proteins encoding genes expression were postponed in ripe fruit following the pathogen attack. Pectin induced the antagonistic yeast to secrete pectinolytic enzymes to increase fruit resistance against gray mold. The activities of pathogenic pectinase of B. cinerea were correspondingly depressed in the pectin-inducible yeast enzyme elicited ripe fruit. These data suggest that pectinase is a molecular target for regulation of disease resistance during fruit ripening.
Collapse
Affiliation(s)
- Laifeng Lu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| | - Lifeng Ji
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| | - Qingqing Ma
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| | - Mingguan Yang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| | - Shuhua Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| | - Qiong Tang
- College of Biosystems Engineering and Food Science, National Engineering Laboratory of Intelligent Food Technology and Equipment, Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture , Zhejiang University , Hangzhou 310058 , China
| | - Liping Qiao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| | - Fengjuan Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| | - Qingbin Guo
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| | - Changlu Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Institute for New Rural Development , Tianjin University of Science and Technology , Tianjin 300457 , P. R. China
| |
Collapse
|
4
|
Hazra S, Bhattacharyya D, Chattopadhyay S. Methyl Jasmonate Regulates Podophyllotoxin Accumulation in Podophyllum hexandrum by Altering the ROS-Responsive Podophyllotoxin Pathway Gene Expression Additionally through the Down Regulation of Few Interfering miRNAs. FRONTIERS IN PLANT SCIENCE 2017; 8:164. [PMID: 28261233 PMCID: PMC5306198 DOI: 10.3389/fpls.2017.00164] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 01/26/2017] [Indexed: 05/04/2023]
Abstract
Podophylloxin (ptox), primarily obtained from Podophyllum hexandrum, is the precursor for semi-synthetic anticancer drugs viz. etoposide, etopophos, and teniposide. Previous studies established that methyl jasmonate (MeJA) treated cell culture of P. hexandrum accumulate ptox significantly. However, the molecular mechanism of MeJA induced ptox accumulation is yet to be explored. Here, we demonstrate that MeJA induces reactive oxygen species (ROS) production, which stimulates ptox accumulation significantly and up regulates three ROS-responsive ptox biosynthetic genes, namely, PhCAD3, PhCAD4 (cinnamyl alcohol dehydrogenase), and NAC3 by increasing their mRNA stability. Classic uncoupler of oxidative phosphorylation, carbonylcyanide m-chlorophenylhydrazone, as well as H2O2 treatment induced the ROS generation and consequently, enhanced the ptox production. However, when the ROS was inhibited with NADPH oxidase inhibitor diphenylene iodonium and Superoxide dismutase inhibitor diethyldithio-carbamic acid, the ROS inhibiting agent, the ptox production was decreased significantly. We also noted that, MeJA up regulated other ptox biosynthetic pathway genes which are not affected by the MeJA induced ROS. Further, these ROS non-responsive genes were controlled by MeJA through the down regulation of five secondary metabolites biosynthesis specific miRNAs viz. miR172i, miR035, miR1438, miR2275, and miR8291. Finally, this study suggested two possible mechanisms through which MeJA modulates the ptox biosynthesis: primarily by increasing the mRNA stability of ROS-responsive genes and secondly, by the up regulation of ROS non-responsive genes through the down regulation of some ROS non-responsive miRNAs.
Collapse
|
5
|
Luo T, Xu K, Luo Y, Chen J, Sheng L, Wang J, Han J, Zeng Y, Xu J, Chen J, Wu Q, Cheng Y, Deng X. Distinct Carotenoid and Flavonoid Accumulation in a Spontaneous Mutant of Ponkan (Citrus reticulata Blanco) Results in Yellowish Fruit and Enhanced Postharvest Resistance. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:8601-8614. [PMID: 26329679 DOI: 10.1021/acs.jafc.5b02807] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
As the most important fresh fruit worldwide, citrus is often subjected to huge postharvest losses caused by abiotic and biotic stresses. As a promising strategy to reduce postharvest losses, enhancing natural defense by potential metabolism reprogramming in citrus mutants has rarely been reported. The yellowish spontaneous mutant of Ponkan (Citrus reticulata Blanco) (YP) was used to investigate the influence of metabolism reprogramming on postharvest performance. Our results show that reduced xanthophyll accumulation is the cause of yellowish coloring of YP and might be attributed to the reduced carotenoid sequestration capacity and upregulated expression of carotenoid cleavage dioxygenase genes. Constantly higher levels of polymethoxylated flavones (PMFs) during the infection and the storage stage might make significant contribution to the more strongly induced resistance against Penicillium digitatum and lower rotting rate. The present study demonstrates the feasibility of applying bud mutants to improve the postharvest performance of citrus fruits.
Collapse
Affiliation(s)
- Tao Luo
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Kunyang Xu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Yi Luo
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Jiajing Chen
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Ling Sheng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Jinqiu Wang
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Jingwen Han
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Yunliu Zeng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Juan Xu
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Jianmin Chen
- Quzhou Bureau of Agriculture Economic Specialty Station , Quzhou 324000, Zhejiang Province, PR China
| | - Qun Wu
- Quzhou Bureau of Agriculture Economic Specialty Station , Quzhou 324000, Zhejiang Province, PR China
| | - Yunjiang Cheng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| | - Xiuxin Deng
- Key Laboratory of Horticultural Plant Biology (Ministry of Education) and Key Laboratory of Horticultural Crop Biology and Genetic Improvement, Central Region (Ministry of Agriculture), Huazhong Agricultural University , Wuhan 430070, PR China
| |
Collapse
|
6
|
Matsuura HN, Fett-Neto AG. The major indole alkaloid N,β-D-glucopyranosyl vincosamide from leaves ofPsychotria leiocarpaCham. & Schltdl. is not an antifeedant but shows broad antioxidant activity. Nat Prod Res 2013; 27:402-11. [DOI: 10.1080/14786419.2012.715293] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
7
|
Scranton MA, Fowler JH, Girke T, Walling LL. Microarray analysis of tomato's early and late wound response reveals new regulatory targets for Leucine aminopeptidase A. PLoS One 2013. [PMID: 24205013 DOI: 10.1371/journal.pone.007788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023] Open
Abstract
Wounding due to mechanical injury or insect feeding causes a wide array of damage to plant cells including cell disruption, desiccation, metabolite oxidation, and disruption of primary metabolism. In response, plants regulate a variety of genes and metabolic pathways to cope with injury. Tomato (Solanum lycopersicum) is a model for wound signaling but few studies have examined the comprehensive gene expression profiles in response to injury. A cross-species microarray approach using the TIGR potato 10-K cDNA array was analyzed for large-scale temporal (early and late) and spatial (locally and systemically) responses to mechanical wounding in tomato leaves. These analyses demonstrated that tomato regulates many primary and secondary metabolic pathways and this regulation is dependent on both timing and location. To determine if LAP-A, a known modulator of wound signaling, influences gene expression beyond the core of late wound-response genes, changes in RNAs from healthy and wounded Leucine aminopeptidase A-silenced (LapA-SI) and wild-type (WT) leaves were examined. While most of the changes in gene expression after wounding in LapA-SI leaves were similar to WT, overall responses were delayed in the LapA-SI leaves. Moreover, two pathogenesis-related 1 (PR-1c and PR-1a2) and two dehydrin (TAS14 and Dhn3) genes were negatively regulated by LAP-A. Collectively, this study has shown that tomato wound responses are complex and that LAP-A's role in modulation of wound responses extends beyond the well described late-wound gene core.
Collapse
Affiliation(s)
- Melissa A Scranton
- Department of Botany and Plant Sciences, Center for Plant Cell Biology, University of California Riverside, Riverside, California, United States of America
| | | | | | | |
Collapse
|
8
|
Loyola-Vargas V, Ruíz-May E, Galaz-Ávalos R, De-la-Peña C. The role of jasmonic acid in root mitochondria disruption. PLANT SIGNALING & BEHAVIOR 2012; 7:611-4. [PMID: 22580693 PMCID: PMC3442852 DOI: 10.4161/psb.20070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Methyl jasmonate (MeJA) produces an important reduction in the accumulation of proteins related to energy metabolism. The treatment of hairy roots (HR) with MeJA increased the accumulation of H2O2 during the first 48 h and this H2O2 accumulation was also observed in isolated mitochondria. Peroxidase and catalase activities decreased in the presence of MeJA, and this decrease directly correlated with the increase of H2O2 in HR treated with MeJA. This suggests that the H2O2 burst due to MeJA is the initial response to mitochondria disruption in the roots.
Collapse
Affiliation(s)
- Victor Loyola-Vargas
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Mérida, Yucatán, México.
| | | | | | | |
Collapse
|
9
|
Morker KH, Roberts MR. Light as both an input and an output of wound-induced reactive oxygen formation in Arabidopsis leaves. PLANT SIGNALING & BEHAVIOR 2011; 6:1087-1089. [PMID: 21822065 PMCID: PMC3260698 DOI: 10.4161/psb.6.8.15823] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Accepted: 04/13/2011] [Indexed: 05/29/2023]
Abstract
The wound response of plants is characterised by rapid changes in gene expression, biochemistry and physiology, and is important both in its own right and as a model for studying events elicited by herbivory. We have recently identified links between light and the wound response in Arabidopsis leaves. This includes an influence of the external light environment on the molecular and biochemical response to wounding, and the observation that endogenous bioluminescence (light emission) is a consequence of tissue damage. Here, we show that this link extends to the production of reactive oxygen species. We show that wounding causes rapid, light-dependent production of superoxide and hydrogen peroxide in chloroplasts via disruption of photosynthesis, and that wound-induced bioluminescence is a consequence of the generation of singlet oxygen.
Collapse
Affiliation(s)
- Krishna H Morker
- Lancaster Environment Centre, Lancaster University, Lancaster, UK.
| | | |
Collapse
|
10
|
A new strategy to assess the quality of broccoli (Brassica oleracea L. italica) based on enzymatic changes and volatile mass ion profile using Proton Transfer Reaction Mass Spectrometry (PTR-MS). INNOV FOOD SCI EMERG 2011. [DOI: 10.1016/j.ifset.2010.12.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
11
|
Hu X, Li W, Chen Q, Yang Y. Early signal transduction linking the synthesis of jasmonic acid in plant. PLANT SIGNALING & BEHAVIOR 2009; 4:696-7. [PMID: 19820318 PMCID: PMC2801378 DOI: 10.4161/psb.4.8.9181] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Accepted: 06/02/2009] [Indexed: 05/20/2023]
Abstract
Jasmonate signaling plays a critical role in protecting plants from pathogens or insect attacks and in limiting damage from abiotic stress. Many events contribute to the regulation of jasmonic acid (JA) synthesis during abiotic or biotic stress, but the details of the underlying mechanism remain unclear. In this Mini-Review paper, we discuss the possible roles of reactive oxygen species (ROS), nitric oxide (NO), calcium influx and mitogen-activated protein kinase (MAPK) cascade during JA synthesis or JA signal transduction.
Collapse
Affiliation(s)
- Xiangyang Hu
- Kunming Institute of Botany, Institute of Tibet Plateau Research at Kunming, Chinese Academy of Science, Kunming, China.
| | | | | | | |
Collapse
|
12
|
El-Maarouf-Bouteau H, Bailly C. Oxidative signaling in seed germination and dormancy. PLANT SIGNALING & BEHAVIOR 2008; 3:175-82. [PMID: 19513212 PMCID: PMC2634111 DOI: 10.4161/psb.3.3.5539] [Citation(s) in RCA: 181] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2008] [Accepted: 01/08/2008] [Indexed: 05/18/2023]
Abstract
Reactive Oxygen Species (ROS) play a key role in various events of seed life. In orthodox seeds, ROS are produced from embryogenesis to germination, i.e., in metabolically active cells, but also in quiescent dry tissues during after ripening and storage, owing various mechanisms depending on the seed moisture content. Although ROS have been up to now widely considered as detrimental to seeds, recent advances in plant physiology signaling pathways has lead to reconsider their role. ROS accumulation can therefore be also beneficial for seed germination and seedling growth by regulating cellular growth, ensuring a protection against pathogens or controlling the cell redox status. ROS probably also act as a positive signal in seed dormancy release. They interact with abscisic acid and gibberellins transduction pathway and are likely to control numerous transcription factors and properties of specific protein through their carbonylation.
Collapse
|
13
|
Bóka K, Orbán N. New aspect of h(2)o(2) signaling. PLANT SIGNALING & BEHAVIOR 2007; 2:498-500. [PMID: 19704538 PMCID: PMC2634348 DOI: 10.4161/psb.2.6.4582] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/14/2007] [Indexed: 05/08/2023]
Abstract
Plant defense is based on a complex response triggered by unfavorable external impacts. The redox state of the cells and its temporal alteration, the oxidative burst, is an important regulatory element of this defense response. Data collected during the last years have caused us to change the previous, strongly simplified theory on signaling which had been based on a speculative, rather sequential mechanism. In the framework of signal transduction, H(2)O(2) signaling pathway(s) is/are only a special part of signal transduction but interacting with other pathways it/they influence the whole transducting system in several points. Our results show that in complexity and in basic regulatory mechanisms (transients, oscillation, tuning, signaling pattern) H(2)O(2) signaling is comparable with other pathways, of which we have more detailed cognition, and our present knowledge makes developing a new theory on this aspect necessary.
Collapse
Affiliation(s)
- Károly Bóka
- Eötvös University; Department of Plant Anatomy; Budapest, Hungary
| | | |
Collapse
|
14
|
Maffei ME, Mithöfer A, Arimura GI, Uchtenhagen H, Bossi S, Bertea CM, Starvaggi Cucuzza L, Novero M, Volpe V, Quadro S, Boland W. Effects of feeding Spodoptera littoralis on lima bean leaves. III. Membrane depolarization and involvement of hydrogen peroxide. PLANT PHYSIOLOGY 2006; 140:1022-35. [PMID: 16443697 PMCID: PMC1400574 DOI: 10.1104/pp.105.071993] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2005] [Revised: 01/12/2006] [Accepted: 01/12/2006] [Indexed: 05/06/2023]
Abstract
In response to herbivore (Spodoptera littoralis) attack, lima bean (Phaseolus lunatus) leaves produced hydrogen peroxide (H(2)O(2)) in concentrations that were higher when compared to mechanically damaged (MD) leaves. Cellular and subcellular localization analyses revealed that H(2)O(2) was mainly localized in MD and herbivore-wounded (HW) zones and spread throughout the veins and tissues. Preferentially, H(2)O(2) was found in cell walls of spongy and mesophyll cells facing intercellular spaces, even though confocal laser scanning microscopy analyses also revealed the presence of H(2)O(2) in mitochondria/peroxisomes. Increased gene and enzyme activations of superoxide dismutase after HW were in agreement with confocal laser scanning microscopy data. After MD, additional application of H(2)O(2) prompted a transient transmembrane potential (V(m)) depolarization, with a V(m) depolarization rate that was higher when compared to HW leaves. In transgenic soybean (Glycine max) suspension cells expressing the Ca(2+)-sensing aequorin system, increasing amounts of added H(2)O(2) correlated with a higher cytosolic calcium ([Ca(2+)](cyt)) concentration. In MD and HW leaves, H(2)O(2) also triggered the increase of [Ca(2+)](cyt), but MD-elicited [Ca(2+)](cyt) increase was more pronounced when compared to HW leaves after addition of exogenous H(2)O(2). The results clearly indicate that V(m) depolarization caused by HW makes the membrane potential more positive and reduces the ability of lima bean leaves to react to signaling molecules.
Collapse
Affiliation(s)
- Massimo E Maffei
- Department of Plant Biology and Centre of Excellence CEBIOVEM, University of Turin, Italy
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Maffei M, Bossi S, Spiteller D, Mithöfer A, Boland W. Effects of feeding Spodoptera littoralis on lima bean leaves. I. Membrane potentials, intracellular calcium variations, oral secretions, and regurgitate components. PLANT PHYSIOLOGY 2004; 134:1752-62. [PMID: 15051862 PMCID: PMC419848 DOI: 10.1104/pp.103.034165] [Citation(s) in RCA: 126] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2003] [Revised: 01/19/2004] [Accepted: 01/19/2004] [Indexed: 05/18/2023]
Abstract
Membrane potentials (V(m)) and intracellular calcium variations were studied in Lima bean (Phaseolus lunatus) leaves when the Mediterranean climbing cutworm (Spodoptera littoralis) was attacking the plants. In addition to the effect of the feeding insect the impact of several N-acyl Glns (volicitin, N-palmitoyl-Gln, N-linolenoyl-Gln) from the larval oral secretion was studied. The results showed that the early events upon herbivore attack were: a) a strong V(m) depolarization at the bite zone and an isotropic wave of V(m) depolarization spreading throughout the entire attacked leaf; b) a V(m) depolarization observed for the regurgitant but not with volicitin [N-(17-hydroxy-linolenoyl)-Gln] alone; c) an enhanced influx of Ca(2+) at the very edge of the bite, which is halved, if the Ca(2+) channel blocker Verapamil is used. Furthermore, the dose-dependence effects of N-acyl Gln conjugates-triggered influx of Ca(2+) studied in transgenic aequorin-expressing soybean (Glycine max) cells, showed: a) a concentration-dependent influx of Ca(2+); b) a configuration-independent effect concerning the stereochemistry of the amino acid moiety; c) a slightly reduced influx of Ca(2+) after modification of the fatty acid backbone by functionalization with oxygen and; d) a comparable effect with the detergent SDS. Finally, the herbivore wounding causes a response in the plant cells that cannot be mimicked by mechanical wounding. The involvement of Ca(2+) in signaling after herbivore wounding is discussed.
Collapse
Affiliation(s)
- Massimo Maffei
- Department of Plant Biology, University of Turin, Turin, Italy
| | | | | | | | | |
Collapse
|