Effect of Senescence Phenotypes and Nitrate Availability on Wheat Leaf Metabolome during Grain Filling
| العنوان: | Effect of Senescence Phenotypes and Nitrate Availability on Wheat Leaf Metabolome during Grain Filling |
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| المؤلفون: | Mutsumi Watanabe, Joachim Kopka, Rainer Hoefgen, Elmien Heyneke, Dirk Walther, Guangyou Duan, Alexander Erban, Peter Buchner, Malcolm J. Hawkesford |
| المصدر: | Agronomy Agronomy, Vol 9, Iss 6, p 305 (2019) Volume 9 Issue 6 |
| بيانات النشر: | MDPI, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | 0106 biological sciences, Senescence, Chlorophyll contents, nitrogen/nutrient, Metabolite, metabolite, early and late senescence phenotype, Biology, 01 natural sciences, lcsh:Agriculture, 03 medical and health sciences, chemistry.chemical_compound, Nutrient, Anthesis, Metabolome, Wheat leaf, 030304 developmental biology, 0303 health sciences, chlorophyll contents, wheat leaf, lcsh:S, Primary metabolite, food and beverages, Ripening, Nitrogen/nutrient, Horticulture, Early and late senescence phenotype, chemistry, Doubled haploidy, Agronomy and Crop Science, 010606 plant biology & botany |
| الوصف: | The capacity for optimising grain yield depends largely on the timing of senescence and the processes underlying efficient remobilisation and cycling of nutrients from source tissues to the developing grain. This study describes how metabolism is adjusted during senescence in response to varying nitrogen application rates after anthesis. A comprehensive metabolite analysis was performed in field-grown Avalon/Cadenza using segregating doubled haploid wheat genotypes having contrasting traits relating to timing of the onset of senescence. Correlative matrices of metabolites and yield parameters determined the metabolic networks that underlie these phenotypes, and were helpful for identifying unique metabolites that are indicative of timing of senescence. They also revealed robust correlations between steady increases in hexose levels, a late senescence phenotype and high straw yield associated with low N fertiliser levels. Tryptophan, cis-aconitate, phosphate and 1-kestose demonstrated strong perturbations in response to nitrogen availability and progression towards developmental senescence. A comprehensive metabolic map of wheat leaf primary metabolites yielded a cumulative readout of processes that occur during developmental ripening and contribute to grain filling in plants with differential senescence timing. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2073-4395 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e390551c7333d40ddc28caecffd0928eTest http://hdl.handle.net/10061/14285Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....e390551c7333d40ddc28caecffd0928e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20734395 |
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