Ethylene involvement in silique and seed development of canola, Brassica napus L

Walton, Linda J.; Kurepin, Leonid V.; Yeung, Edward C.; Shah, Saleh; Emery, R. J. Neil; Reid, David M.; Pharis, Richard P.

doi:10.1016/j.plaphy.2012.06.016

Cited by 33 publications

(28 citation statements)

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“…In these clusters, cytochrome P450, late embryogenesis abundant proteins (LEA), LTP (lipid transfer protein) and storage proteins, and abscisic acid and ethylene (hormone metabolism) were over-represented. This observation is in agreement with a number of other studies where storage proteins, abscisic acid and ethylene were highly expressed during late seed developmental stages because of their roles in growth and development of seed tissues, accumulation of seed reserves, maturation, desiccation tolerance, induction of seed dormancy and the utilization of storage reserves to support germination [1, 2, 12, 14, 39]. …”

Section: Discussionsupporting

confidence: 92%

“…Starch turnover, breakdown of cytosolic and plastidic glycolytic pathways, malonyl-CoA and fatty acid (FA) synthesis, TAG assembly and oil body formation takes place during TAG synthesis in seed [9]. The plant hormones gibberellin, auxin, ethylene and abscisic acid (ABA) play key regulatory roles in seed development and growth [12, 13] and changes in hormonal levels affect the seed size and seed number in B. napus , especially during the 10–20 days after pollination (DAP) period [14]. Transcription factors, for example, ABI3 (Abscisic acid insensitive-3), ABI4, ABI5, LEC1 (leafy cotyledon1), LEC2 and FUS3 (FUSCA3) are important regulators of the complex gene network during the process of seed development, maturation and germination [15, 16].…”

Section: Introductionmentioning

confidence: 99%

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Genome-wide analysis of coordinated transcript abundance during seed development in different Brassica rapa morphotypes

et al. 2013

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BackgroundBrassica seeds are important as basic units of plant growth and sources of vegetable oil. Seed development is regulated by many dynamic metabolic processes controlled by complex networks of spatially and temporally expressed genes. We conducted a global microarray gene co-expression analysis by measuring transcript abundance of developing seeds from two diverse B. rapa morphotypes: a pak choi (leafy-type) and a yellow sarson (oil-type), and two of their doubled haploid (DH) progenies, (1) to study the timing of metabolic processes in developing seeds, (2) to explore the major transcriptional differences in developing seeds of the two morphotypes, and (3) to identify the optimum stage for a genetical genomics study in B. rapa seed.ResultsSeed developmental stages were similar in developing seeds of pak choi and yellow sarson of B. rapa; however, the colour of embryo and seed coat differed among these two morphotypes. In this study, most transcriptional changes occurred between 25 and 35 DAP, which shows that the timing of seed developmental processes in B. rapa is at later developmental stages than in the related species B. napus. Using a Weighted Gene Co-expression Network Analysis (WGCNA), we identified 47 “gene modules”, of which 27 showed a significant association with temporal and/or genotypic variation. An additional hierarchical cluster analysis identified broad spectra of gene expression patterns during seed development. The predominant variation in gene expression was according to developmental stages rather than morphotype differences. Since lipids are the major storage compounds of Brassica seeds, we investigated in more detail the regulation of lipid metabolism. Four co-regulated gene clusters were identified with 17 putative cis-regulatory elements predicted in their 1000 bp upstream region, either specific or common to different lipid metabolic pathways.ConclusionsThis is the first study of genome-wide profiling of transcript abundance during seed development in B. rapa. The identification of key physiological events, major expression patterns, and putative cis-regulatory elements provides useful information to construct gene regulatory networks in B. rapa developing seeds and provides a starting point for a genetical genomics study of seed quality traits.Electronic supplementary materialThe online version of this article (doi:10.1186/1471-2164-14-840) contains supplementary material, which is available to authorized users.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Genome-wide analysis of coordinated transcript abundance during seed development in different Brassica rapa morphotypes

et al. 2013

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“…Ethylene (C 2 H 4 ) is a gaseous plant hormone which functions in regulating several processes in plant growth and development, including stem elongation, leaf expansion, initiation of root formation, flowering and reproductive development . Although increases in ethylene production often cause retardation of shoot growth, together with reduced reproductive development, this action of ethylene is concentration dependent, with low levels of ethylene production being required for normal (or optimal) plant growth and development . Application of ethylene using the ethylene‐releasing agent, ethephon (or ethrel) can give the desired retardation of shoot growth without affecting crop yield (if applied during early vegetative stages) in cereal species such as barley ( Hordeum vulgare L.) and wheat .…”

Section: Ethylenementioning

confidence: 99%

Enhancing crop yield with the use of N‐based fertilizers co‐applied with plant hormones or growth regulators

et al. 2014

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Crop yield, vegetative or reproductive, depends on access to an adequate supply of essential mineral nutrients. At the same time, a crop plant's growth and development, and thus yield, also depend on in situ production of plant hormones. Thus optimizing mineral nutrition and providing supplemental hormones are two mechanisms for gaining appreciable yield increases. Optimizing the mineral nutrient supply is a common and accepted agricultural practice, but the co-application of nitrogen-based fertilizers with plant hormones or plant growth regulators is relatively uncommon. Our review discusses possible uses of plant hormones (gibberellins, auxins, cytokinins, abscisic acid and ethylene) and specific growth regulators (glycine betaine and polyamines) to enhance and optimize crop yield when co-applied with nitrogen-based fertilizers. We conclude that use of growth-active gibberellins, together with a nitrogen-based fertilizer, can result in appreciable and significant additive increases in shoot dry biomass of crops, including forage crops growing under low-temperature conditions. There may also be a potential for use of an auxin or cytokinin, together with a nitrogen-based fertilizer, for obtaining additive increases in dry shoot biomass and/or reproductive yield. Further research, though, is needed to determine the potential of co-application of nitrogen-based fertilizers with abscisic acid, ethylene and other growth regulators.

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“…Direct or indirect effects on the plant endogenous levels of "stress-related" phytohormones by the presence of microorganisms are also very likely. The product of ACC deaminase gene reduces the pool of available ACC and thus can limit ethylene production (Walton et al 2012 ). Furthermore, many species of both soil-and plant-associated bacteria have been shown to carry 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase gene controlling the biosynthesis of ethylene precursor, ACC (Klee et al 1991 ).…”

Section: Introductionmentioning

confidence: 99%

“…For example, inoculation of plants with plant growth-promoting bacterium Burkholderia phytofi rmans caused increases in both shoot and root growth, and these increases in growth were associated with endogenous changes in not just growth-promoting phytohormones but also in the levels of ABA, SA, and JA (Kurepin et al 2015b , c ). Introduction of ACC deaminase gene into plant tissues via inoculation with a bacterial species carrying this gene or via genetic engineering can improve plant tolerance to abiotic stresses (Kurepin et al 2007 ) but can also negatively affect growth and development of non-stressed plants (Walton et al 2012 ). The product of ACC deaminase gene reduces the pool of available ACC and thus can limit ethylene production (Walton et al 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Plant Hormones under Challenging Environmental Factors

Ahammed¹,

Yu²

2016

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Ethylene involvement in silique and seed development of canola, Brassica napus L

Cited by 33 publications

References 38 publications

Genome-wide analysis of coordinated transcript abundance during seed development in different Brassica rapa morphotypes

Genome-wide analysis of coordinated transcript abundance during seed development in different Brassica rapa morphotypes

Enhancing crop yield with the use of N‐based fertilizers co‐applied with plant hormones or growth regulators

Plant Hormones under Challenging Environmental Factors

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