Ethylene and plant responses to stress

Morgan, Page W.; Drew, M. C.

doi:10.1034/j.1399-3054.1997.1000325.x

Cited by 175 publications

(224 citation statements)

References 42 publications

Supporting

Mentioning

213

Contrasting

Unclassified

Order By: Relevance

“…In the present study we found an increase in salt concentration gradually enhanced ethylene production in red pepper seedlings, which is in agreement with earlier studies (Bar and others 1998; Feng and Barker 1992;Lutts and others 1996;Mayak and others 2004). Ethylene sensitivity differs from species to species and cultivar to cultivar (Zapata and others 2007) and even depends on environmental conditions such as light (Mortensen 1989), O 3 , CO 2 , and so on (Morgan and Drew 1997). When a PGPR contains the enzyme ACC deaminase, the bacterial cells act as a sink for ACC, the immediate biosynthetic precursor of ethylene, thereby lowering plant ethylene levels (Stearns and others 2005).…”

Section: Discussionmentioning

confidence: 97%

“…Because an increase in the rate of ethylene production is known to be associated with various environmental stresses, including salt stress (Abeles and others 1992;Mattoo and Suttle 1991;Mayak and others 2004;Morgan and Drew 1997;Wang and others 1990), higher rates of ethylene production as well as concentrations of ACC, the immediate precursor of ethylene, and enzyme activities involved in ethylene metabolism, such as ACS and ACO, in salt-stressed red pepper seedlings were expected. In the present study we found an increase in salt concentration gradually enhanced ethylene production in red pepper seedlings, which is in agreement with earlier studies (Bar and others 1998; Feng and Barker 1992;Lutts and others 1996;Mayak and others 2004).…”

Section: Discussionmentioning

confidence: 97%

See 1 more Smart Citation

Regulation of Ethylene Biosynthesis Under Salt Stress in Red Pepper (Capsicum annuum L.) by 1-Aminocyclopropane-1-Carboxylic Acid (ACC) Deaminase-producing Halotolerant Bacteria

Siddikee

Chauhan

2011

J Plant Growth Regul

View full text Add to dashboard Cite

The present study was carried out to understand the mechanism of salt stress amelioration in red pepper plants by inoculation of 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase-producing halotolerant bacteria. In general, ethylene production, ACC concentration, ACC synthase (ACS), and ACC oxidase (ACO) enzyme activities increased with increasing levels of salt stress. Treatment with halotolerant bacteria reduced ethylene production by 47-64%, ACC concentration by 47-55% and ACO activity by 18-19% in salt-stressed (150 mmol NaCl) red pepper seedlings compared to uninoculated controls. ACS activity was lower in red pepper seedlings treated with Bacillus aryabhattai RS341 but higher in seedlings treated with Brevibacterium epidermidis RS15 (44%) and Micrococcus yunnanensis RS222 (23%) under salt-stressed conditions as compared to uninoculated controls. A significant increase was recorded in red pepper plant growth under salt stress when treated with ACC deaminase-producing halotolerant bacteria as compared to uninoculated controls. The results of this study collectively suggest that salt stress enhanced ethylene production by increasing enzyme activities of the ethylene biosynthetic pathway. Inoculation with ACC deaminase-producing halotolerant bacteria plays an important role in ethylene metabolism, particularly by reducing the ACC concentration, although a direct effect on reducing ACO activity was also observed. It is suggested that growth promotion in inoculated red pepper plants under inhibitory levels of salt stress is due to ACC deaminase activity present in the halotolerant bacteria.

show abstract

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 97%

Regulation of Ethylene Biosynthesis Under Salt Stress in Red Pepper (Capsicum annuum L.) by 1-Aminocyclopropane-1-Carboxylic Acid (ACC) Deaminase-producing Halotolerant Bacteria

Siddikee

Chauhan

2011

J Plant Growth Regul

View full text Add to dashboard Cite

show abstract

“…The GSR genes may specify transcription factors, proteases or other kinds of macromolecules that allow control over the quantities of the products of genes regulated by them. Since gsr-1 to gsr-6 mutants are able to integrate cellular and whole-body protective responses to NaCl stress, and are morphologically altered, the GSR-1 to GSR-6 genes may control a signalling cascade involving the interplay of different growth regulators such as brassinosteroids, gibberellins, auxins, cytokinins, abscisic acid and ethylene (Wilkinson et al 1995;Ishitani et al 1997;Morgan and Drew 1997;Shinozaki and Yamaguchi-Shinozaki 1997;Leung and Giraudat 1998;Pandey-Rai et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Salt-tolerant mutants in glycophytic salinity response (GSR) genes in Catharanthus roseus

Luthra

Kumar

2003

Theor Appl Genet

View full text Add to dashboard Cite

The periwinkle Catharanthus roseus shares glycophytic properties of crop plants. To contribute towards an understanding of the glycophytic response to salinity, large populations of M(2) seeds having an origin in nitroso-methyl urea and ethyl methane sulphonate treatments were screened for germination with 250 mM of NaCl. Out of the nine mutant lines so recovered, which tolerated salt stress due to loss of the normal glycophytic salinity response ( GSR), the characteristics of six gsr mutants are reported here. All six, gsr-1 to gsr-6, differed from the wild-type in both seedling and adult-plant morphological characters beside being salt tolerant. The mutations in them were inherited as monogenic recessive alleles at the corresponding wild-type loci. The trans-complementation tests revealed that the gsr-1 to gsr-6 mutants specified six complementation groups. The mutant seedlings generally accumulated more proline and glycine betaine, constitutively, than the wild-type. The mutant plants transpired lower amounts of water and accumulated higher amounts of proline under drought stress. It was inferred that the products of the six GSR genes defined here are involved in the regulation of salt stress, as well as cell division, developmental and/or morphogenetic pathway(s), in C. roseus.

show abstract

“…Ethylene has long been regarded as a stress hormone [142]. However, the roles of ethylene signaling in abiotic stress responses are still not clear, but it is known that ethylene signaling is important in regulating plant growth and stress responses, and it functions through its receptors.…”

Section: Jasmonic Acid and Ethylenementioning

confidence: 99%

Metabolome Analyses for Understanding Abiotic Stress Responses in Plants to Evolve Management Strategies

Chakraborty

Pradhan

Lama

2013

Climate Change and Plant Abiotic Stress Tolerance

View full text Add to dashboard Cite

Abiotic stress responses are of the utmost importance for plants because they cannot survive unless they are able to cope with environmental changes, such as high and low temperatures, drought, flooding, salinity, freezing, change in pH, strong light, UV, and heavy metals. Plants respond to various stresses at different levels, including molecular and cellular levels, as well as by modifying their metabolomes. Hence, studies on plant responses to stresses can be conducted at any of these levels to provide an understanding of the mechanisms involved. The present chapter focuses on the metabolomic approach to understand the responses of plants to different abiotic stresses, which can then be utilized to evolve strategies to combat such stress. Osmoprotectant metabolites, such as proline, glycine betaine, and polyamines, as well as carbohydrates, play important roles in the protection of plants against osmotic disbalances due to abiotic stresses. In addition, oxidative stresses are also overcome by an array of antioxidants, such as phenols, ascorbate, carotenoids, and a-tocopherol, as well as antioxidative enzymes. Signaling cascades activated during abiotic stresses lead to overexpression of protein kinases and stress proteins, and also involve molecules such as jasmonic acid and salicylic acid. Protein kinases and protein phosphatases that are encoded by large gene families often act in tandem to perform the phosphorylation and dephosphorylation leading to their activation and inactivation involved in stress signaling in plants. Analysis of microRNAs and transcriptomes has provided sufficient understanding of the gene expression levels during periods of stress. Hence, taken together, all these results can be utilized for identifying genes and/or metabolites overexpressed in tolerant species during periods of stress, and can be utilized to achieve higher tolerance and survivability during stresses. 727

show abstract

Ethylene and plant responses to stress

Cited by 175 publications

References 42 publications

Regulation of Ethylene Biosynthesis Under Salt Stress in Red Pepper (Capsicum annuum L.) by 1-Aminocyclopropane-1-Carboxylic Acid (ACC) Deaminase-producing Halotolerant Bacteria

Regulation of Ethylene Biosynthesis Under Salt Stress in Red Pepper (Capsicum annuum L.) by 1-Aminocyclopropane-1-Carboxylic Acid (ACC) Deaminase-producing Halotolerant Bacteria

Salt-tolerant mutants in glycophytic salinity response (GSR) genes in Catharanthus roseus

Metabolome Analyses for Understanding Abiotic Stress Responses in Plants to Evolve Management Strategies

Contact Info

Product

Resources

About