Seed Germination and Dormancy.

Bewley, J. Derek

doi:10.1105/tpc.9.7.1055

Cited by 2,560 publications

(2,372 citation statements)

References 49 publications

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“…The control of gene expression in cereal embryos during germination is poorly understood as few genes that exhibit germination-specific expression have been identified and endosperm reserve mobilisation is usually considered to be a post-germinative event (Bewley, 1997). However, significant amounts of amino acids and peptides are present in the endosperm of the unimbibed grain and the early expression of the barley scutellar peptide transporter suggests a central role for peptide transport in the germination process per se (Higgins and Payne, 1981).…”

Section: Control Of Hvptr1 Expressionmentioning

confidence: 99%

Cloning and functional characterisation of a peptide transporter expressed in the scutellum of barley grain during the early stages of germination

et al. 1998

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Section: Control Of Hvptr1 Expressionmentioning

confidence: 99%

Cloning and functional characterisation of a peptide transporter expressed in the scutellum of barley grain during the early stages of germination

et al. 1998

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“…Many biochemical processes transition from quiescent to active phases. Some of cellular organelles undergo rapid repair to become fully functional, including cellular membrane and mitochondria (Bewley, 1997). Here, we have demonstrated that cell wall composition and possibly structures undergo very active modifications in germinating embryos as deduced from rapid changes in cell wall polysaccharide components (Table 1) and the abundance of the transcripts coding for major cell wall enzymes and proteins ( Fig.…”

Section: An Active Cell Wall Modification Is Observed In Germinating mentioning

confidence: 63%

“…Cellular membrane and mitochondria repairs have been known to be important in the initiation of seed germination (Bewley, 1997).Transcription of cell wall genes is also very active in germinating barley seeds (An and Lin, 2011). However, little is known about cell wall polysaccharide biosynthetic activities and their regulations at transcriptional and post-transcriptional (e.g.…”

Section: Introductionmentioning

confidence: 99%

Changes in cell wall polysaccharide composition, gene transcription and alternative splicing in germinating barley embryos

Zhang

Pettolino

et al. 2016

Journal of Plant Physiology

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Changes in cell wall polysaccharide composition, gene transcription and alternative splicing in germinating embryos.Journal of Plant Physiology http://dx.doi.org/10.1016/j.jplph. 2015.12.007 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. At least 50 cell wall genes changed transcript levels significantly. Expression patterns of many cell wall genes coincided with changes in polysaccharide composition. Our data showed that cell wall polysaccharide metabolism was very active in germinating barley embryos, which was regulated at both transcriptional and post-transcriptional levels.

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“…Overall the least sensitive endpoint was germination, and the most sensitive endpoint was root growth, but this varied between root and shoot growth depending on the species and the soil type tested (Figure 2, Table 5). Other studies have also shown that germination success is a less sensitive endpoint than root and shoot growth, resulting in an underestimation of the toxicity of fuel-contaminated soils [36,40]. Interestingly for D. chapmanii and E. pendunculare, the order of sensitivity of endpoints was conserved between soil types, but this order differed between soil types for L. crinita and C. muscoides (Table 4).…”

Section: Discussionmentioning

confidence: 93%

“…Dormancy is an innate "whole-seed" characteristic that defines the environmental conditions that must be satisfied to initiate germination. Dormancy will prevent germination until specific environmental conditions trigger testa rupture, and these conditions are typically speciesspecific [40][41]. In seed viability bioassays, seeds of seven of the twelve plant species were able to germinate on high organic control soils, whereas only four species germinated on the low OC soil.…”

Section: Discussionmentioning

confidence: 99%

Impact of hydrocarbons from a diesel fuel on the germination and early growth of subantarctic plants

Macoustra

King

Wasley

et al. 2015

Environ. Sci.: Processes Impacts

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. (2015). Impact of hydrocarbons from a diesel fuel on the germination and early growth of subantarctic plants. Environmental Science Processes and Impacts, 17 (7), 1238-1248. Impact of hydrocarbons from a diesel fuel on the germination and early growth of subantarctic plants AbstractSpecial Antarctic Blend (SAB) is a diesel fuel dominated by aliphatic hydrocarbons that is commonly used in Antarctic and subantarctic regions. The past and present use of SAB fuel at Australia's scientific research stations has resulted in multiple spills, contaminating soils in these pristine areas. Despite this, no soil quality guidelines or remediation targets have been developed for the region, primarily due to the lack of established indigenous test species and subsequent biological effects data. In this study, twelve plant species native to subantarctic regions were collected from Macquarie Island and evaluated to determine their suitably for use in laboratory-based toxicity testing, using germination success and seedling growth (shoot and root length) as endpoints. Two soil types (low and high organic carbon (OC)) were investigated to reflect the variable OC content found in soils on Macquarie Island. These soils were spiked with SAB fuel and aged for 14 days to generate a concentration series of SAB-contaminated soils. Exposure doses were quantified as the concentration of total petroleum hydrocarbons (TPH, nC9-nC18) on a soil dry mass basis. Seven species successfully germinated on control soils under laboratory conditions, and four of these species (Colobanthus muscoides Hook.f., Deschampsia chapmanii Petrie, Epilobium pendunculare A.Cunn. and Luzula crinita Hook.f.) showed a dose-dependent inhibition of germination when exposed to SAB-contaminated soils. Contaminated soils with low OC were generally more toxic to plants than high organic carbon soils. Increasing soil-TPH concentrations significantly inhibited shoot and root growth, and root length was identified as the most sensitive endpoint. Although the test species were tolerant to SAB-contaminated soils in germination assays, development of early life stages (up to 28 days) were generally more sensitive indicator of exposure effects, and may be more useful endpoints for future testing. Disciplines Medicine and Health Sciences | Social and Behavioral Sciences Publication DetailsMacoustra, G. K., King, C. K., Wasley, J., Robinson, S. A. & Jolley, D. F. (2015). Impact of hydrocarbons from a diesel fuel on the germination and early growth of subantarctic plants. Environmental Science Processes and Impacts, 17 (7) Keywords: total petroleum hydrocarbons, total organic carbon, monocots, dicots, germination, root and shoot growth. 2 ABSTRACTSpecial Antarctic Blend (SAB) is a diesel fuel dominated by aliphatic hydrocarbons that is commonly used in Antarctic and subantarctic regions. The past and present use of SAB fuel at Australia's scientific research stations has resulted in multiple spills, contaminating soils in these pristine areas. Despite this, no soil quality guidel...

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Seed Germination and Dormancy.

Cited by 2,560 publications

References 49 publications

Cloning and functional characterisation of a peptide transporter expressed in the scutellum of barley grain during the early stages of germination

Cloning and functional characterisation of a peptide transporter expressed in the scutellum of barley grain during the early stages of germination

Changes in cell wall polysaccharide composition, gene transcription and alternative splicing in germinating barley embryos

Impact of hydrocarbons from a diesel fuel on the germination and early growth of subantarctic plants

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