1
|
Transcriptomic insights into the effects of abscisic acid on the germination of Magnolia sieboldii K. Koch seed. Gene 2023; 853:147066. [PMID: 36455787 DOI: 10.1016/j.gene.2022.147066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 11/07/2022] [Accepted: 11/18/2022] [Indexed: 11/30/2022]
Abstract
Magnolia sieboldii K. Koch is a deciduous tree species. However, the wild resource of M. sieboldii has been declining due to excessive utilization and seed dormancy. In our previous research, M. sieboldii seeds have morphophysiological dormancy and low germination rates under natural conditions. The aim of the present study was to identify the genes involved in dormancy maintenance. In this study, the germination percentage of M. sieboldii seeds negatively correlated with the content of endogenous abscisic acid (ABA). The hydration of seeds for germination showed three distinct phases. Five key time points were identified: 0 h imbibition (dry seed, GZ), 0 day after imbibition (DAI), 16 DAI, 40 DAI, and 56 DAI. The comprehensive transcript profiles of M. sieboldii seeds treated with ABA and water at the five key germinating stages were obtained. A total of 9641 differentially expressed genes (DEGs) were identified, and 208 and 197 common DEGs were found throughout the ABA and water treatments, respectively. Compared with that in the GZ, 518, 696, 2133, and 1535 DEGs were identified in the SH group at 0, 16, 40 and 56 DAI, respectively. 666, 1725, 1560 and 1415 DEGs were identified in the ABA group at 0, 16, 40, and 56 DAI, respectively. Among the identified DEGs, 12 722 were annotated with GO terms, the top three enriched GO terms were different among the DEGs at 56 DAI in the ABA vs. SH treatments. KEGG pathway enrichment analysis for DEGs indicated that oxidative phosphorylation, protein processing in endoplasmic reticulum, starch and sucrose metabolism play an important role in seed response to ABA. 1926 TFs are obtained and classified into 72 families from the M. sieboldii transcriptome. Results of differential gene expression analysis together with qRT-PCR indicated that phase II is crucial for rapid and successful seed germination. This study is the first to present the global expression patterns of ABA-regulated transcripts in M. sieboldii seeds at different germinating phases.
Collapse
|
2
|
Lyu J, Wu Y, Jin X, Tang Z, Liao W, Dawuda MM, Hu L, Xie J, Yu J, Calderón-Urrea A. Proteomic analysis reveals key proteins involved in ethylene-induced adventitious root development in cucumber ( Cucumis sativus L.). PeerJ 2021; 9:e10887. [PMID: 33868797 PMCID: PMC8034359 DOI: 10.7717/peerj.10887] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 01/12/2021] [Indexed: 01/25/2023] Open
Abstract
The mechanisms involved in adventitious root formation reflect the adaptability of plants to the environment. Moreover, the rooting process is regulated by endogenous hormone signals. Ethylene, a signaling hormone molecule, has been shown to play an essential role in the process of root development. In the present study, in order to explore the relationship between the ethylene-induced adventitious rooting process and photosynthesis and energy metabolism, the iTRAQ technique and proteomic analysis were employed to ascertain the expression of different proteins that occur during adventitious rooting in cucumber (Cucumis sativus L.) seedlings. Out of the 5,014 differentially expressed proteins (DEPs), there were 115 identified DEPs, among which 24 were considered related to adventitious root development. Most of the identified proteins were related to carbon and energy metabolism, photosynthesis, transcription, translation and amino acid metabolism. Subsequently, we focused on S-adenosylmethionine synthase (SAMS) and ATP synthase subunit a (AtpA). Our findings suggest that the key enzyme, SAMS, upstream of ethylene synthesis, is directly involved in adventitious root development in cucumber. Meanwhile, AtpA may be positively correlated with photosynthetic capacity during adventitious root development. Moreover, endogenous ethylene synthesis, photosynthesis, carbon assimilation capacity, and energy material metabolism were enhanced by exogenous ethylene application during adventitious rooting. In conclusion, endogenous ethylene synthesis can be improved by exogenous ethylene additions to stimulate the induction and formation of adventitious roots. Moreover, photosynthesis and starch degradation were enhanced by ethylene treatment to provide more energy and carbon sources for the rooting process.
Collapse
Affiliation(s)
- Jian Lyu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Yue Wu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Xin Jin
- College of Agriculture and Forestry Science, Linyi University, Linyi, China
| | - Zhongqi Tang
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Mohammed Mujitaba Dawuda
- College of Horticulture, Gansu Agricultural University, Lanzhou, China.,Department of Horticulture, University for Development Studies, Tamale, Ghana
| | - Linli Hu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jianming Xie
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China.,Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University, Lanzhou, China
| | - Alejandro Calderón-Urrea
- Department of Biology, College of Science and Mathematics, California State University, CA, USA.,College of Plant Protection, Gansu Agricultural University, Lanzhou, China
| |
Collapse
|
3
|
Corbineau F, Xia Q, Bailly C, El-Maarouf-Bouteau H. Ethylene, a key factor in the regulation of seed dormancy. FRONTIERS IN PLANT SCIENCE 2014; 5:539. [PMID: 25346747 PMCID: PMC4193209 DOI: 10.3389/fpls.2014.00539] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 09/22/2014] [Indexed: 05/04/2023]
Abstract
Ethylene is an important component of the gaseous environment, and regulates numerous plant developmental processes including seed germination and seedling establishment. Dormancy, the inability to germinate in apparently favorable conditions, has been demonstrated to be regulated by the hormonal balance between abscisic acid (ABA) and gibberellins (GAs). Ethylene plays a key role in dormancy release in numerous species, the effective concentrations allowing the germination of dormant seeds ranging between 0.1 and 200 μL L(-1). Studies using inhibitors of ethylene biosynthesis or of ethylene action and analysis of mutant lines altered in genes involved in the ethylene signaling pathway (etr1, ein2, ain1, etr1, and erf1) demonstrate the involvement of ethylene in the regulation of germination and dormancy. Ethylene counteracts ABA effects through a regulation of ABA metabolism and signaling pathways. Moreover, ethylene insensitive mutants in Arabidopsis are more sensitive to ABA and the seeds are more dormant. Numerous data also show an interaction between ABA, GAs and ethylene metabolism and signaling pathways. It has been increasingly demonstrated that reactive oxygen species (ROS) may play a significant role in the regulation of seed germination interacting with hormonal signaling pathways. In the present review the responsiveness of seeds to ethylene will be described, and the key role of ethylene in the regulation of seed dormancy via a crosstalk between hormones and other signals will be discussed.
Collapse
Affiliation(s)
- Françoise Corbineau
- Biologie des Semences (Seed Biology), UMR7622 CNRS-UPMC, Sorbonne Universités – Université Pierre et Marie Curie-ParisParis, France
| | | | | | | |
Collapse
|
4
|
Chang P, Gerhardt KE, Huang XD, Yu XM, Glick BR, Gerwing PD, Greenberg BM. Plant growth-promoting bacteria facilitate the growth of barley and oats in salt-impacted soil: implications for phytoremediation of saline soils. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2014; 16:1133-47. [PMID: 24933907 DOI: 10.1080/15226514.2013.821447] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Plant growth-promoting bacteria (PGPB) strains that contain the enzyme 1-amino-cyclopropane-1-carboxylate (ACC) deaminase can lower stress ethylene levels and improve plant growth. In this study, ACC deaminase-producing bacteria were isolated from a ) salt-impacted ( 50 dS/m) farm field, and their ability to promote plant growth of barley 1): and oats in saline soil was investigated in pouch assays (1% NaCI), greenhouse trials (9.4 dS/m), and field trials (6-24 dS/m). A mix of previously isolated PGPB strains UW3 (Pseudomonas sp.) and UW4 (P. sp.) was also tested for comparison. Rhizobacterial isolate CMH3 (P. corrugata) and UW3+UW4 partially alleviated plant salt stress in growth pouch assays. In greenhouse trials, CMH3 enhanced root biomass of barley and oats by 200% and 50%, respectively. UW3+UW4, CMH3 and isolate CMH2 also enhanced barley and oat shoot growth by 100%-150%. In field tests, shoot biomass of oats tripled when treated with UW3+UW4 and doubled with CHM3 compared with that of untreated plants. PGPB treatment did not affect salt uptake on a per mass basis; higher plant biomass led to greater salt uptake, resulting in decreased soil salinity. This study demonstrates a method for improving plant growth in marginal saline soils. Associated implications for salt
Collapse
|
5
|
Pan S, Rasul F, Li W, Tian H, Mo Z, Duan M, Tang X. Roles of plant growth regulators on yield, grain qualities and antioxidant enzyme activities in super hybrid rice (Oryza sativa L.). RICE (NEW YORK, N.Y.) 2013; 6:9. [PMID: 24280625 PMCID: PMC4883720 DOI: 10.1186/1939-8433-6-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Accepted: 04/11/2013] [Indexed: 05/18/2023]
Abstract
BACKGROUND Plant growth regulators play important roles in plant growth and development, but little is known about roles of plant growth regulators in yield, grain qualities and antioxidant enzyme activities in super hybrid rice. In this study, gibberellic acid(GA3), paclobutrazol (PBZ), 6-Benzylaminopurine(6-BA) treatments and distilled water (control) were sprayed to two hybrid rice cultivars (Peizataifeng and Huayou 86) at the heading stage in the field experiments in both early and late season in 2007. Treatments were arranged in a split-plot design with four replications. Cultivars treatments with two newly developed super hybrid rice Peizataifeng and Huayou86 were the main plots and plant growth regulators treatments were the subplots. Subplot treatments included (1) plots sprayed with distilled water(CK), (2) plots sprayed with 20 mg L-1 GA3 prepared using 95% ethanol as surfactant(GA3), (3) plots sprayed with 50 mg L-1 PBZ(PBZ), (4) plots sprayed with 30 mg L-1 6-BA(6-BA). RESULTS Spraying PBZ with 50 mg L-1 or 6-BA with 30 mg L-1 at the heading stage could increase the number of spikelets per panicle, seed setting rate and grain yields in Peizataifeng and Huayou86 in both seasons. PBZ treatment also significantly improved head rice rate and amylose content in Peizataifeng and Huayou86 in early season. Furthermore, it was observed that spraying PBZ or 6-BA could increase super oxide dismutase (SOD) and peroxidase (POD) activities, decrease accumulation of malendialdehyde (MDA) in flag leaves at the late growth stage. CONCLUSIONS Application of PBZ or 6-BA partially alleviated the detrimental effects of rice senescence by modulating the activity of enzymatic antioxidants, and improving antioxidant system, which helped in sustaining plant growth. Therefore, spraying PBZ with 50 mg L-1 or 6-BA with 30 mg L-1 at the heading stage could increase grain yields and improve grain qualities in the two super hybrid rice.
Collapse
Affiliation(s)
- Shenggang Pan
- />College of Agriculture, South China Agricultural University, Guangzhou City, Guangdong Province China
- />Scientific Observing and Experimental Station of Crop cultivation in South China, Ministry of Agriculture, Beijing City, China
| | - Fahd Rasul
- />College of Agriculture, South China Agricultural University, Guangzhou City, Guangdong Province China
- />Department of Agronomy, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Wu Li
- />College of Agriculture, South China Agricultural University, Guangzhou City, Guangdong Province China
- />Crops Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou City, Guangdong Province China
| | - Hua Tian
- />College of Agriculture, South China Agricultural University, Guangzhou City, Guangdong Province China
- />Scientific Observing and Experimental Station of Crop cultivation in South China, Ministry of Agriculture, Beijing City, China
| | - Zhaowen Mo
- />College of Agriculture, South China Agricultural University, Guangzhou City, Guangdong Province China
- />Scientific Observing and Experimental Station of Crop cultivation in South China, Ministry of Agriculture, Beijing City, China
| | - Meiyang Duan
- />College of Agriculture, South China Agricultural University, Guangzhou City, Guangdong Province China
- />Scientific Observing and Experimental Station of Crop cultivation in South China, Ministry of Agriculture, Beijing City, China
| | - Xiangru Tang
- />College of Agriculture, South China Agricultural University, Guangzhou City, Guangdong Province China
- />Scientific Observing and Experimental Station of Crop cultivation in South China, Ministry of Agriculture, Beijing City, China
| |
Collapse
|
6
|
Mur LAJ, Lloyd AJ, Cristescu SM, Harren FJM, Hall MA, Smith AR. Biphasic ethylene production during the hypersensitive response in Arabidopsis: a window into defense priming mechanisms? PLANT SIGNALING & BEHAVIOR 2009; 4:610-613. [PMID: 19820330 PMCID: PMC2710552 DOI: 10.4161/psb.4.7.8904] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Accepted: 04/28/2009] [Indexed: 05/20/2023]
Abstract
The hypersensitive response (HR) is a cell death phenomenon associated with localized resistance to pathogens. Biphasic patterns in the generation of H(2)O(2), salicylic acid and ethylene have been observed in tobacco during the early stages of the HR. These biphasic models reflect an initial elicitation by pathogen-associated molecular patterns followed by a second phase, induced by pathogen-encoded avirulence gene products. The first phase has been proposed to potentiate the second, to increase the efficacy of plant resistance to disease. This potentiation is comparable to the "priming" of plant defenses which is seen when plants display systemic resistance to disease. The events regulating the generation of the biphasic wave, or priming, remains obscure, however recently we demonstrated a key role for nitric oxide in this process in a HR occurring in tobacco. Here we use laser photoacoustic detection to demonstrate that biphasic ethylene production also occurs during a HR occurring in Arabidopsis. We suggest that ethylene emanation during the HR represents a ready means of visualising biphasic events during the HR and that exploiting the genomic resources offered by this model species will facilitate the development of a mechanistic understanding of potentiating/priming processes.
Collapse
Affiliation(s)
- Luis A J Mur
- Univerisity of Wales, Aberystwyth, Institute of Biological Sciences, Aberystwyth, Wales, UK.
| | | | | | | | | | | |
Collapse
|
7
|
Moshkov IE, Novikova GV, Mur LAJ, Smith AR, Hall MA. Ethylene rapidly up-regulates the activities of both monomeric GTP-binding proteins and protein kinase(s) in epicotyls of pea. PLANT PHYSIOLOGY 2003; 131:1718-26. [PMID: 12692330 PMCID: PMC166927 DOI: 10.1104/pp.102.015057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2002] [Revised: 11/12/2002] [Accepted: 12/20/2002] [Indexed: 05/23/2023]
Abstract
It is demonstrated that, in etiolated pea (Pisum sativum) epicotyls, ethylene affects the activation of both monomeric GTP-binding proteins (monomeric G-proteins) and protein kinases. For monomeric G-proteins, the effect may be a rapid (2 min) and bimodal up-regulation, a transiently unimodal activation, or a transient down-regulation. Pretreatment with 1-methylcyclopropene abolishes the response to ethylene overall. Immunoprecipitation studies indicate that some of the monomeric G-proteins affected may be of the Rab class. Protein kinase activity is rapidly up-regulated by ethylene, the effect is inhibited by 1-methylcyclopropene, and the activation is bimodal. Immunoprecipitation indicates that the kinase(s) are of the MAP kinase ERK1 group. It is proposed that the data support the hypothesis that a transduction chain exists that is separate and antagonistic to that currently revealed by studies on Arabidopsis mutants.
Collapse
Affiliation(s)
- Igor E Moshkov
- Timiryazev Institute of Plant Physiology RAS, Botanicheskaya 35, Moscow 127276, Russia
| | | | | | | | | |
Collapse
|
8
|
Moshkov IE, Mur LAJ, Novikova GV, Smith AR, Hall MA. Ethylene regulates monomeric GTP-binding protein gene expression and activity in Arabidopsis. PLANT PHYSIOLOGY 2003; 131:1705-17. [PMID: 12692329 PMCID: PMC166926 DOI: 10.1104/pp.014035] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2002] [Revised: 10/22/2002] [Accepted: 11/30/2002] [Indexed: 05/19/2023]
Abstract
Ethylene rapidly and transiently up-regulates the activity of several monomeric GTP-binding proteins (monomeric G proteins) in leaves of Arabidopsis as determined by two-dimensional gel electrophoresis and autoradiographic analyses. The activation is suppressed by the receptor-directed inhibitor 1-methylcyclopropene. In the etr1-1 mutant, constitutive activity of all the monomeric G proteins activated by ethylene is down-regulated relative to wild type, and ethylene treatment has no effect on the levels of activity. Conversely, in the ctr1-1 mutant, several of the monomeric G proteins activated by ethylene are constitutively up-regulated. However, the activation profile of ctr1-1 does not exactly mimic that of ethylene-treated wild type. Biochemical and molecular evidence suggested that some of these monomeric G proteins are of the Rab class. Expression of the genes for a number of monomeric G proteins in response to ethylene was investigated by reverse transcriptase-PCR. Rab8 and Ara3 expression was increased within 10 min of ethylene treatment, although levels fell back significantly by 40 min. In the etr1-1 mutant, expression of Rab8 was lower than wild type and unaffected by ethylene; in ctr1-1, expression of Rab8 was much higher than wild type and comparable with that seen in ethylene treatments. Expression in ctr1-1 was also unaffected by ethylene. Thus, the data indicate a role for monomeric G proteins in ethylene signal transduction.
Collapse
Affiliation(s)
- Igor E Moshkov
- Timiryazev Institute of Plant Physiology Russian Academy of Sciences, Botanicheskaya 35, Moscow, Russia
| | | | | | | | | |
Collapse
|
9
|
Peeters AJM, Cox MCH, Benschop JJ, Vreeburg RAM, Bou J, Voesenek LACJ. Submergence research using Rumex palustris as a model; looking back and going forward. JOURNAL OF EXPERIMENTAL BOTANY 2002; 53:391-398. [PMID: 11847236 DOI: 10.1093/jexbot/53.368.391] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Flooding is a phenomenon that destroys many crops worldwide. During evolution several plant species evolved specialized mechanisms to survive short- or long-term waterlogging and even complete submergence. One of the plant species that evolved such a mechanism is Rumex palustris. When flooded, this plant species is capable to elongate its petioles to reach the surface of the water. Thereby it restores normal gas exchange which leads to a better survival rate. Enhanced levels of ethylene, due to physical entrapment, is the key signal for the plant that its environment has changed from air to water. Subsequently, a signal transduction cascade involving at least four (classical) plant hormones, ethylene, auxin, abscisic acid, and gibberellic acid, is activated. This results in hyponastic growth of the leaves accompanied by a strongly enhanced elongation rate of the petioles enabling them to reach the surface. Other factors, among them cell wall loosening enzymes have been shown to play a role as well.
Collapse
Affiliation(s)
- Anton J M Peeters
- Department of Plant Ecophysiology, University Utrecht, Sorbonnelaan 16, 3584 CA Utrecht, The Netherlands
| | | | | | | | | | | |
Collapse
|
10
|
Kessler A, Baldwin IT. Plant responses to insect herbivory: the emerging molecular analysis. ANNUAL REVIEW OF PLANT BIOLOGY 2002; 53:299-328. [PMID: 12221978 DOI: 10.1146/annurev.arplant.53.100301.135207] [Citation(s) in RCA: 735] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Plants respond to herbivore attack with a bewildering array of responses, broadly categorized as direct and indirect defenses, and tolerance. Plant-herbivore interactions are played out on spatial scales that include the cellular responses, well-studied in plant-pathogen interactions, as well as responses that function at whole-plant and community levels. The plant's wound response plays a central role but is frequently altered by insect-specific elicitors, giving plants the potential to optimize their defenses. In this review, we emphasize studies that advance the molecular understanding of elicited direct and indirect defenses and include verifications with insect bioassays. Large-scale transcriptional changes accompany insect-induced resistance, which is organized into specific temporal and spatial patterns and points to the existence of herbivore-specific trans-activating elements orchestrating the responses. Such organizational elements could help elucidate the molecular control over the diversity of responses elicited by herbivore attack.
Collapse
Affiliation(s)
- André Kessler
- Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Jena 07745, Germany.
| | | |
Collapse
|