Does fire drive fatty acid composition in seed coats of physically dormant species?
Fire-prone ecosystem
germination
heat shock
seed chemistry
seed dormancy
seed traits
Journal
Plant biology (Stuttgart, Germany)
ISSN: 1438-8677
Titre abrégé: Plant Biol (Stuttg)
Pays: England
ID NLM: 101148926
Informations de publication
Date de publication:
Mar 2023
Mar 2023
Historique:
received:
11
07
2022
accepted:
05
12
2022
pubmed:
20
12
2022
medline:
3
3
2023
entrez:
19
12
2022
Statut:
ppublish
Résumé
Seed dormancy is the key driver regulating seed germination, hence is fundamental to the seedling recruitment life-history stage and population persistence. However, despite the importance of physical dormancy (PY) in timing post-fire germination, the mechanism driving dormancy-break within seed coats remains surprisingly unclear. We suggest that seed coat chemistry may play an important role in controlling dormancy in species with PY. In particular, seed coat fatty acids (FAs) are hydrophobic, and have melting points within the range of seed dormancy-breaking temperatures. Furthermore, melting points of saturated FAs increase with increasing carbon chain length. We investigated whether fire could influence seed coat FA profiles and discuss their potential influence on dormancy mechanisms. Seed coat FAs of 25 species within the Faboideae, from fire-prone and fire-free ecosystems, were identified and quantified through GC-MS. Fatty acid profiles were interpreted in the context of species habitat and interspecific variation. Fatty acid compositions were distinct between species from fire-prone and fire-free habitats. Fire-prone species tended to have longer saturated FA chains, a lower ratio of saturated to unsaturated FA, and a slightly higher relative amount of FAs compared to fire-free species. The specific FA composition of seed coats of fire-prone species indicated a potential role of FAs in dormancy mechanisms. Overall, the distinct FA composition between fire-prone and fire-free species suggests that chemistry of the seed coat may be under selection pressure in fire-prone ecosystems.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
268-275Subventions
Organisme : Australian Research Council
ID : DP190101892
Organisme : Australian Research Council
ID : LP180100741
Informations de copyright
© 2022 The Authors. Plant Biology published by John Wiley & Sons Ltd on behalf of German Society for Plant Sciences, Royal Botanical Society of the Netherlands.
Références
Asilbekova D.T., Ul'chenko N.T., Rakhimova N.K., Nigmatullaev A.M., Glushenkova A.I. (2005) Seed lipids from Crotalaria alata and Guizotia abyssinica. Chemistry of Natural Compounds, 41, 596-597.
Auld T.D., O'Connell M.A. (1991) Predicting patterns of postfire germination in 35 eastern Australian Fabaceae. Australian Journal of Ecology, 16, 53-70.
Baskin C.C., Baskin J.M. (2014) Seeds: ecology, biogeography, and evolution of dormancy and germination. Academic Press, San Diego, CA, USA.
Baskin J.M., Baskin C.C., Li X. (2000) Taxonomy, anatomy and evolution of physical dormancy in seeds. Plant Species Biology, 15, 139-152.
Bell D.T., Williams D.S. (1998) Tolerance of thermal shock in seeds. Australian Journal of Botany, 46, 221-233.
Bewley J.D., Bradford K.J., Hilhorst H.W.M., Nonogaki H. (2012) Seeds: physiology of development, germination and dormancy. Springer, New York, USA.
Blackman A.G., Gahan L.R. (2014) SI chemical data. John Wiley and Sons, Milton, Australia.
Bowman D.M.J.S., Balch J.K., Artaxo P., Bond W.J., Carlson J.M., Cochrane M.A., D'Antonio C.M., DeFries R.S., Doyle J.C., Harrison S.P., Johnston F.H., Keeley J.E., Krawchuk M.A., Kull C.A., Marston J.B., Moritz M.A., Prentice I.C., Roos C.I., Scott A.C., Swetnam T.W., van der Werf G.R., Pyne S.J. (2009) Fire in the earth system. Science, 324, 481-484.
Bowman D.M.J.S., Murphy B.P., Burrows G.E., Crisp M.D. (2012) Fire regimes and the evolution of Australian biota. In: Bradstock R.A., Gill A.M., Williams R.J. (Eds), Flammable Australia: fire regimes, biodiversity and ecosystems in a changing world. CSIRO Publishing, Collingwood, Australia, pp 43-67.
Brown A., Cherikoff V., Roberts D. (1987) Fatty acid composition of seeds from the Australian Acacia species. Lipids, 22, 490-494.
Cardoso D., Pennington R.T., de Queiroz L.P., Boatwright J.S., Van Wyk B.E., Wojciechowski M.F., Lavin M. (2013) Reconstructing the deep-branching relationships of the papilionoid legumes. South African Journal of Botany, 89, 58-75.
Chowdhury A.R., Banerji R. (1995) Studies on leguminous seeds. Fett Wissenschaft Technologie-Fat Science Technology, 97, 457-458.
Chowdhury A.R., Banerji R., Tiwari S.R., Misra G., Nigam S.K. (1986) Studies on leguminous seeds III. Fett Wissenschaft Technologie-Fat Science Technology, 88, 144-146.
Christopherson S.W., Glass R.L. (1969) Preparation of milk fat methyl esters by alcoholysis in an essentially nonalcoholic solution. Journal of Dairy Science, 52, 1289-1290.
Cochrane A., Brown N., Meeson N., Harding C. (1999) The germination requirements of Hemigenia exilis (Lamiaceae): seed plug removal and gibberellic acid as a successful technique to break dormancy in an arid zone shrub from Western Australia. CALM Science, 3, 21-30.
Daulatabad C.M.J.D., Hosamani K.M., Mulla G.M.M. (1989) Unusual fatty acids of Crotolaria retusa seed oil. Journal of the Science of Food and Agriculture, 47, 253-255.
Demirbas A. (2008) Biodiesel from triglycerides via transesterification. In: Biodiesel. Springer, London, UK, pp 121-140.
Gama-Arachchige N.S., Baskin J.M., Geneve R.L., Baskin C.C. (2012) The autumn effect: timing of physical dormancy break in seeds of two winter annual species of Geraniaceae by a stepwise process. Annals of Botany, 110, 637-651.
Gama-Arachchige N.S., Baskin J.M., Geneve R.L., Baskin C.C. (2013) Identification and characterization of ten new water gaps in seeds and fruits with physical dormancy and classification of water-gap complexes. Annals of Botany, 112, 69-84.
Geneve R.L., Baskin C.C., Baskin J.M., Jayasuriya K.M.G.G., Gama-Arachchige N.S. (2018) Functional morpho-anatomy of water-gap complexes in physically dormant seed. Seed Science Research, 28, 186-191.
Gunstone F.D., Taylor G.M., Cornelius J.A., Hammonds T.W. (1968) New tropical seed oils. II. Component acids of leguminous and other seed oils. Journal of the Science of Food and Agriculture, 19, 706-709.
Gunstone F.D., Hammonds T.W., Steward S.R., Cornelius J.A. (1972) New tropical seed oils. IV. Component acids of leguminous and other seed oils including useful sources of crepenynic and dehydrocrepenynic acid. Journal of the Science of Food and Agriculture, 23, 53-60.
Harwood J.L. (1980) Plant acyl lipids: structure, distribution, and analysis. In: Conn E.E., Stumpf P.K. (Eds), The biochemistry of plants: a comprehensive treatise. Academic Press, New York, USA, pp 2-55.
He T.H., Lamont B.B. (2018) Baptism by fire: the pivotal role of ancient conflagrations in evolution of the Earth's flora. National Science Review, 5, 237-254.
Herranz J.M., Ferrandis P., Martínez-Sánchez J.J. (1998) Influence of heat on seed germination of seven Mediterranean Leguminosae species. Plant Ecology, 136, 95-103.
Hudson A.R., Ayre D.J., Ooi M.K.J. (2015) Physical dormancy in a changing climate. Seed Science Research, 25, 66-81.
IPCC (2019) Climate change and land: an IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems. In: Shukla P.R., Skea J., Buendia E.C., Masson-Delmotte V., Pörtner H.-O., Roberts D.C., Zhai P., Slade R., Connors S., van Diemen R., Ferrat M., Haughey E., Luz S., Neogi S., Pathak M., Petzold J., Pereira J.P., Vyas P., Huntley E., Kissick K., Belkacemi M., Malley J. (Eds). In press.
Janska A., Peckova E., Sczepaniak B., Smykal P., Soukup A. (2019) The role of the testa during the establishment of physical dormancy in the pea seed. Annals of Botany, 123, 815-829.
Kaymak H.C. (2014) Seed fatty acid profiles: potential relations between seed germination under temperature stress in selected vegetable species. Acta Scientiarum Polonorum-Hortorum Cultus, 13, 119-133.
Keeley J.E. (1987) Role of fire in seed germination of woody taxa in California chaparral. Ecology, 68, 434-443.
Keeley J.E., Pausas J.G., Rundel P.W., Bond W.J., Bradstock R.A. (2011) Fire as an evolutionary pressure shaping plant traits. Trends in Plant Science, 16, 406-411.
Knothe G., Dunn R.O. (2009) A comprehensive evaluation of the melting points of fatty acids and esters determined by differential scanning calorimetry. Journal of the American Oil Chemists Society, 86, 843-856.
Krist S., Stuebiger G., Unterweger H., Bandion F., Buchbauer G. (2005) Analysis of volatile compounds and triglycerides of seed oils extracted from different poppy varieties (Papaver somniferum L.). Journal of Agricultural and Food Chemistry, 53, 8310-8316.
Linder C.R. (2000) Adaptive evolution of seed oils in plants: accounting for the biogeographic distribution of saturated and unsaturated fatty acids in seed oils. The American Naturalist, 156, 442-458.
Liyanage G.S., Ooi M.K.J. (2015) Intra-population level variation in thresholds for physical dormancy-breaking temperature. Annals of Botany, 116, 123-131.
Liyanage G.S., Ooi M.K.J. (2017) Do dormancy-breaking temperature thresholds change as seeds age in the soil seed bank? Seed Science Research, 27, 1-11.
LPWG, Bruneau A., Doyle J.J., Herendeen P., Hughes C., Kenicer G., Lewis G., Mackinder B., Pennington R.T., Sanderson M.J., Wojciechowski M.F., Boatwright S., Brown G., Cardoso D., Crisp M., Egan A., Fortunato R.H., Hawkins J., Kajita T., Klitgaard B., Koenen E., Lavin M., Luckow M., Marazzi B., McMahon M.M., Miller J.T., Murphy D.J., Ohashi H., de Queiroz L.P., Rico L., Sarkinen T., Schrire B., Simon M.F., Souza E.R., Steele K., Torke B.M., Wieringa J.J., van Wyk B.E. (2013) Legume phylogeny and classification in the 21st century: progress, prospects and lessons for other species-rich clades. Taxon, 62, 217-248.
Maluf W.R., Tigchelaar E.C. (1982) Relationship between fatty acid composition and low-temperature seed germination in tomato. Journal of the American Society for Horticultural Science, 107, 620-623.
Merritt D.J., Turner S.R., Clarke S., Dixon K.W. (2007) Seed dormancy and germination stimulation syndromes for Australian temperate species. Australian Journal of Botany, 55, 336-344.
Merritt D.J., Martyn A.J., Ainsley P., Young R.E., Seed L.U., Thorpe M., Hay F.R., Commander L.E., Shackelford N., Offord C.A., Dixon K.W., Probert R.J. (2014) A continental-scale study of seed lifespan in experimental storage examining seed, plant, and environmental traits associated with longevity. Biodiversity and Conservation, 23, 1081-1104.
Moreira B., Pausas J.G. (2012) Tanned or burned: the role of fire in shaping physical seed dormancy. PLoS One, 7, e51523.
Morrison D.A., McClay K., Porter C., Rish S. (1998) The role of the lens in controlling heat-induced breakdown of testa-imposed dormancy in native Australian legumes. Annals of Botany, 82, 35-40.
Murphy B.P., Miller B.P. (2017) Fire and Australian vegetation. In: Keith D. (Ed), Australian vegetation. Cambridge University Press, Cambridge, UK, pp 113-134.
Nolan R.H., Collins L., Leigh A., Ooi M.K.J., Curran T.J., Fairman T.A., Resco de Dios V., Bradstock R. (2021) Limits to post-fire vegetation recovery under climate change. Plant, Cell & Environment, 44, 3471-3489.
O'Dowd D.J., Gill A.M. (1986) Seed dispersal syndromes in Australian acacia. In: Murray D.R. (Ed), Seed dispersal. Academic Press, Sydney, Australia, pp 87-121.
Office of Environment and Heritage. (2014) Kinchega National Park fire management strategy. New South Wales (NSW) National Parks and Wildlife Services, Office of Environment and Heritage, NSW Department of Planning and Environment.
Ooi M.K.J., Auld T.D., Denham A.J. (2009) Climate change and bet-hedging: interactions between increased soil temperatures and seed bank persistence. Global Change Biology, 15, 2375-2386.
Ooi M.K.J., Denham A.J., Santana V.M., Auld T.D. (2014) Temperature thresholds of physically dormant seeds and plant functional response to fire: variation among species and relative impact of climate change. Ecology and Evolution, 4, 656-671.
OriginPro (1992) Version 2020b (academic). OriginLab Corp., Northhampton, MA, USA.
Ponquett R.T., Smith M.T., Ross G. (1992) Lipid autoxidation and seed ageing: putative relationships between seed longevity and lipid stability. Seed Science Research, 2, 51-54.
R Core Team (2021) The R project for statistical computing. WU (Wirtschaftsuniversität Wien) Institute for Statistics and Mathematics, Vienna, Austria. https://www.r-project.org/ (13 April 2021).
Rivett D.E., Tucker D.J., Jones G.P. (1983) The chemical composition of seeds from some Australian plants. Australian Journal of Agricultural Research, 34, 427-432.
Ross K.A., Arntfield S.D., Beta T., Cenkowski S., Fulcher R.G. (2008) Understanding and modifying water uptake of seed coats through characterizing the glass transition. International Journal of Food Properties, 11, 544-560.
Ruiz-Matute A.I., Rodríguez-Sánchez S., Sanz M.L., Soria A.C. (2018) Chromatographic technique: gas chromatography (GC). In: Sun D.W. (Ed), Modern techniques for food authentication. Academic Press, Burlington, MA, USA, pp 415-458.
Stewart R.R.C., Bewley J.D. (1980) Lipid-peroxidation associated with accelerated aging of soybean axes. Plant Physiology, 65, 245-248.
Tangney R., Issa N.A., Merritt D.J., Callow J.N., Miller B.P. (2018) A method for extensive spatiotemporal assessment of soil temperatures during an experimental fire using distributed temperature sensing in optical fibre. International Journal of Wildland Fire, 27, 135-140.
Werker E. (1981) Seed dormancy as explained by the anatomy of embryo envelopes. Israel Journal of Botany, 29, 22-44.
Westbrooke M.E., Leversha J., Kerr M.K.C. (2001) Vegetation of Kinchega National Park, Western New South Wales. Centre for Environmental Management, University of Ballarat, Australia.
Whelan R.J. (1995) The ecology of fire. Cambridge University Press, Cambridge, UK.
Wickham H. (2016) ggplot2: elegant graphics for data analysis. Springer, New York, USA.
Wojciechowski M.F., Lavin M., Sanderson M.J. (2004) A phylogeny of legumes (Leguminosae) based on analyses of the plastid matK gene resolves many well-supported subclades within the family. American Journal of Botany, 91, 1846-1862.
Yu S., Du S., Yuan J., Hu Y. (2016) Fatty acid profile in the seeds and seed tissues of Paeonia L. species as new oil plant resources. Scientific Reports, 6, 1-10.
Zeng L.W., Cocks P.S., Kailis S.G., Kuo J. (2005) The role of fractures and lipids in the seed coat in the loss of hardseededness of six Mediterranean legume species. Journal of Agricultural Science, 143, 43-55.