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Main conclusion Autophagy is involved in cytoplasmic degradation through directly engulfing cytosol and organelles by autophagosomes and then fusing with lysosome-like vesicles during the development of nonarticulated laticifers in Euphorbia kansui Liou.Autophagy has been reported to play an important role in a wide range of eukaryotic organisms during responses to various abiotic and biotic stresses...
Main conclusionAbscisic acid mediates the effect of post-anthesis soil drying on grain filling through regulating the activities of key enzymes and expressions of genes involved in sucrose-to-starch conversion in rice spikelets. This study investigated if abscisic acid (ABA) would mediate the effect of post-anthesis soil drying on grain filling through regulating...
Sulfur (S) is an essential macronutrient for plants, and deficiency in soil S availability limits plant growth. Adaptive strategies have been evolved by plants to respond to S deficiency by coordinating systemic regulatory mechanism. A split-root experiment using legume model plant Medicago truncatula Gaertn. was conducted to investigate the systemic response to S deficiency. Plant growth, root morphology...
Rathu Heenati (RHT) is a Sri Lankan rice cultivar that carries a brown planthopper (BPH) resistance gene, Bph3, and shows broad-spectrum resistance to all four biotypes of BPH. The BPH-resistance loci in RHT has been studied extensively and assigned to four different rice chromosomes (3, 4, 6, and 10) by different research groups, but the gene has not been cloned previously. An Affymetrix rice genome...
MicroRNAs (miRNAs) play important roles in response of plants to biotic and abiotic stresses. Aluminum (Al) toxicity is a major factor limiting plant growth in acidic soils. However, there has been limited report on the involvement of miRNAs in response of plants to toxic Al3+. To identify Al3+-responsive miRNAs at whole-genome level, high-throughput sequencing technology was used to sequence libraries...
Medicago falcata is a legume species that exhibits great capacity of tolerance to abiotic stresses. To elucidate the mechanism underlying tolerance of M. falcata to freezing, we compared the characteristics of M. falcata in response to cold acclimation and freezing with those of the legume model plant Medicago truncatula. M. falcata seedlings were more tolerant to freezing than M. truncatula, as...
To understand the functions of transcription factor OsNAC5 in response to abiotic stress, we generated transgenic rice plants with knockdown OsNAC5 by RNA-interfered (RNAi) and overexpressing OsNAC5, and investigated the effects of cold, drought and salt stress on wild-type (WT), RNAi and overexpression rice lines. Our results demonstrated that RNAi lines became less tolerant to these stresses than...
Boron (B) is an essential micronutrient for plants, which when occurs in excess in the growth medium, becomes toxic to plants. Rapid inhibition of root elongation is one of the most distinct symptoms of B toxicity. Hydrogen sulfide (H2S) is emerging as a potential messenger molecule involved in modulation of physiological processes in plants. In the present study, we investigated the role of H2S in...
Early-flowered superior spikelets usually exhibit a faster grain filling rate and heavier grain weight than late-flowered inferior spikelets in rice (Oryza sativa L.). But the intrinsic factors responsible for the variations between the two types of spikelets are unclear. This study investigated whether and how polyamines (PAs) are involved in regulating post-anthesis development of rice spikelets...
Abstract. An outward current that appeared to activate instantaneously in response to depolarising voltage pulses at low sampling frequencies predominated in the plasma membrane of ground-parenchyma protoplasts derived from coats of developing Phaseolus vulgaris L. (cv. Redland Pioneer) seeds. However, the outward current showed time-dependent activation when higher sampling frequencies were used...
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