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Seung Hee Eom, Tae Kyung Hyun^*
Phyton-International Journal of Experimental Botany, DOI:10.32604/phyton.2023.044032
（This article belongs to this Special Issue: Abiotic and Biotic Stress Tolerance in Crop)
Abstract Heat and drought are prominent abiotic stressors that limit crop productivity and yield, particularly concerning climate change; therefore, understanding the molecular mechanisms underlying plant stress responses is crucial for stress-tolerant crop production. This study conducted a transcriptomic analysis to elucidate how garlic (Allium sativum L.) responds to drought and heat stress conditions. Transcriptome libraries were generated to identify differentially expressed genes (DEGs) induced by drought and heat stresses. Functional classification and clustering analysis of DEGs revealed stress-specific gene expression patterns. Notably, cell wall-related genes were implicated in the drought response, whereas heat stress was associated with heat stress transcription factors… More >

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Ain Raal^1,*, Linda Rusalepp², Tatiana Chiru³, Nicolae Ciobanu³, Kelly Talvistu¹, Michelle Shusta¹, Oleh Koshovyi^1,4, Tõnu Püssa²
Phyton-International Journal of Experimental Botany, DOI:10.32604/phyton.2023.042723
（This article belongs to this Special Issue: Extraction Techniques, Composition and Bioactivity Research of Plant Extracts)
Abstract The fruits of the Sea buckthorn (Hippophae rhamnoides L.) are a popular plant food and a valuable health product. Cultivating of plants produces a lot of leaves with fine branches as an unnecessary residue, which need valorization. The aim of the study was to estimate (by HPLC-MS/MS) the qualitative and quantitative content of polyphenolic compounds in different parts of H. rhamnoides (HR), and to determine the level of antioxidant activity of leaves and fruits (by DPPH, ABTS methods and ferrozine test). Up to 19 compounds were identified in different parts of HR. The fruits are rich in flavonoids, including various… More >

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Yueying Liu^#, Yuqing Wang^#, Lijiao Gu^*
Phyton-International Journal of Experimental Botany, DOI:10.32604/phyton.2023.043306
（This article belongs to this Special Issue: Abiotic and Biotic Stress Tolerance in Crop)
Abstract WRKY transcription factors play important roles in plant growth, development, and stress responses. Our previous research has shown that the GhWRKY91 gene can delay age-, abscisic acid (ABA)-, and drought-induced leaf senescence when overexpressed in transgenic Arabidopsis plants. To explore in more depth the biological functions of the GhWRKY91 gene, we further observed the root growth of overexpressing transgenic Arabidopsis thaliana under ABA and drought treatment. In this study, we transplanted the germinated seeds of wild-type (WT) and three transgenic lines (OE-12, OE-13 and OE-20) to 1/2 MS solid medium containing ABA and different concentrations of mannitol (simulated drought treatment)… More >

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