Genome-wide changes in microRNA expression during short and prolonged heat stress and recovery in contrasting rice cultivars

Abstract

HighlightHeat susceptible and tolerant rice genotypes have different landscapes of miRNAs and the tolerant genotypes show efficient recovery mediated by miRNAs. Roots regulate miRNAs more sensitively than shoots during heat stress.

A combined microRNA and transcriptome analyses illuminates the resistance response of rice against brown planthopper

“…3b), implying their involvement in BPH response. In addition, miR1859 showed higher expression during heat stress treatment [22]. Members of the miR1861 family regulate starch accumulation and yield in rice [21], whilst miR390-TAS3-ARFs forms an auxin-responsive regulatory network controlling root growth [20].…”

“…2a), many of which belonged to known miRNA families including miR156, miRNA160, miR166, miR169, miR1846, miR1861 and miR319 (Additional file 3: Table S2). Members of the miRNA families were reported to be involved not only in growth, development, grain size and hormone signaling, but also in response to biotic and abiotic stress [21][22][23][24][25][26][27][28][29][30][31]. These BPH6 responsive DEMs might be involved in response to BPH.…”

“…miRNAs specifically regulate target gene expression through binding complementary sequences to degrade mRNA or inhibit translation [19]. Plant miRNAs are involved in many development processes, including hormone signal transduction, and leaf, floral, shoot, root and vascular development [20][21][22], and play significant roles in abiotic and biotic stress responses [23][24][25][26][27][28]. miR160 is associated with local defense and systemic acquired resistance to potato late blight [24].…”

Effects of Rice Aging on Its Main Nutrients and Quality Characters

“…It was also found that the lower molecular weight polypeptide decreased with the increase of storage time, while the higher molecular weight polypeptide increased (Park et al, 2012;Chrastil, 1990). More importantly, the content of acetic acid soluble protein in milled rice decreased during 7 years of storage (Bolling et al, 1977;Bolling et al, 1978;Mangrauthia et al, 2017). During the aging process, the protein content of rice grain changed slightly, but the soluble nitrogen decreased continuously.…”

Vitamin E Function in Stress Sensing and Signaling in Plants

“…miRNAs, small endogenous non-coding RNAs of 19-25 nucleotides, have emerged as ubiquitous critical regulators in nearly all eukaryotes and are considered important modulators of gene expression at the post-transcriptional level, either directing the cleavage of target genes or inhibiting translation. Consequently, miRNAs play an essential role in plant response to a number of environmental stresses, including plant acquisition of heat tolerance (Mangrauthia et al, 2017). In turn, PAP has been shown to be a retrograde inhibitor of the nuclear XRN exoribonucleases, thus protecting primary miRNAs from being degraded and therefore promoting mature miRNA production.…”