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DTSTART:20260329T030000
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DTSTAMP:20260416T222456Z
UID:1762509600@ist.ac.at
DTSTART:20251107T110000
DTEND:20251107T120000
DESCRIPTION:Speaker: Blake Meyers\nhosted by Xiaoqi Feng\nAbstract: In plan
 ts\, 21 or 22-nt miRNAs or siRNAs typically negatively regulate target gen
 es through mRNA cleavage or translational inhibition. Heterochromatic or P
 ol IV are 24-nt and function to maintain heterochromatin and silence trans
 posons. Phased “secondary” siRNAs (phasiRNAs) are generated from mRNAs
  targeted by a typically 22-nt “trigger” miRNA and are produced as eit
 her 21- or 24-mers via distinct pathways. Our prior work in maize\, wheat\
 , rice and other flowering plants demonstrates the temporal and spatial di
 stribution of up to three sets of “reproductive phasiRNAs”\, which are
  extraordinarily enriched in the male germline of many of these species. T
 hese include 21-nt and 24-nt siRNAs abundant in pre-meiotic and meiotic an
 thers\, support tapetal and meiocyte development. Both classes are produce
 d from long\, non-coding RNAs\, generated by hundreds to thousands of loci
 \, depending on the species.  The functions for these small RNAs in plant
 s remain poorly characterized. I will describe our recent work investigati
 ng the biogenesis\, evolution\, and functions of plant phasiRNAs and their
  roles in modulating male fertility\, primarily centered on our work in gr
 asses.
LOCATION:Central Bldg / O1 / Mondi 2b\, ISTA
ORGANIZER:Xiaoqi.Feng@ist.ac.at
SUMMARY:Blake Meyers: Phased\, secondary siRNAs in plant reproduction
URL:https://talks-calendar.ista.ac.at/events/6137
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