ArticlePlant cell reports2012
Differential regulation of alanine aminotransferase homologues by abiotic stresses in wheat (Triticum aestivum L.) seedlings.
Article in Plant cell reports, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 48 citations in OpenAlex.
- Quantitative proteomic analysis based on TMT reveals different responses of Haloxylon ammodendron and Haloxylon persicum to long-term drought.BMC plant biology · 2025Article
- Alanine supplementation enhancing cordycepin production in Cordyceps militaris via upregulation of Cns2 and Cns3 genes expression levels.Journal of food and drug analysis · 2024Article
- Role of alanine aminotransferase in crop resilience to climate change: a critical review.Physiology and molecular biology of plants : an international journal of functional plant biology · 2024Review
- Primary Metabolite Screening Shows Significant Differences between Embryogenic and Non-Embryogenic Callus of Tamarillo (Plants (Basel, Switzerland) · 2023Article
- Metabolic Profiling Identifies Changes in the Winter Wheat Grains FollowingPlants (Basel, Switzerland) · 2023Article
- Physiological, Nutritional and Metabolomic Responses of Tomato Plants After the Foliar Application of Amino Acids Aspartic Acid, Glutamic Acid and Alanine.Frontiers in plant science · 2020Article
- Expression of a cucumber alanine aminotransferase2 gene improves nitrogen use efficiency in transgenic rice.Journal, genetic engineering & biotechnology · 2019Article
- Comparative Proteomics Analysis of the Seedling Root Response of Drought-sensitive and Drought-tolerant Maize Varieties to Drought Stress.International journal of molecular sciences · 2019Article
- Effects of different nitrogen fertilizers on two wheat cultivars: An integrated approach.Plant direct · 2018Article
- Article
- Environmental stress is the major cause of transcriptomic and proteomic changes in GM and non-GM plants.Scientific reports · 2017Article
- Identification and expression analyses of the alanine aminotransferase (AlaAT) gene family in poplar seedlings.Scientific reports · 2017Article
- Loss of variation of state detected in soybean metabolic and human myelomonocytic leukaemia cell transcriptional networks under external stimuli.Scientific reports · 2016Article
- Differential root transcriptomics in a polyploid non-model crop: the importance of respiration during osmotic stress.Scientific reports · 2016Article
- Stress-MediatedFrontiers in plant science · 2016Review
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Wheat (Triticum aestivum L.) seedlings contain four alanine aminotransferase (AlaAT) homologues. Two of them encode AlaAT enzymes, whereas two homologues act as glumate:glyoxylate aminotransferase (GGAT). To address the function of the distinct AlaAT homologues a comparative examination of the changes in transcript level together with the enzyme activity and alanine and glutamate content in wheat seedlings subjected to low oxygen availability, nitrogen and light deficiency has been studied. Shoots of wheat seedlings were more tolerant to hypoxia than the roots as judging on the basis of enzyme activity and transcript level. Hypoxia induced AlaAT1 earlier in roots than in shoots, while AlaAT2 and GGAT were unaffected. The increase in AlaAT activity lagged behind the increase in alanine content. Nitrogen deficiency has little effect on the activity of GGAT. In contrast, lower activity of AlaAT and the level of mRNA for AlaAT1 and AlaAT2 in wheat seedlings growing on a nitrogen-free medium seems to indicate that AlaAT is regulated by the availability of nitrogen. Both AlaAT and GGAT activities were present in etiolated wheat seedlings but their activity was half of that observed in light-grown seedlings. Exposure of etiolated seedlings to light caused an increase in enzyme activities and up-regulated GGAT1. It is proposed that hypoxia-induced AlaAT1 and light-induced peroxisomal GGAT1 appears to be crucial for the regulation of energy availability in plants grown under unfavourable environmental conditions. Key message In young wheat seedlings, both AlaAT and GGAT are down-regulated by nitrogen deficiency, whereas AlaAT1 is upregulated by hypoxia and GGAT1 by light.
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