Stress-Responsive MicroRNAs in Populus

ABSTRACT: MicroRNAs (miRNAs), a group of small non-coding RNAs, have recently become a subject of intense study. They are a class of post-transcriptional, negative regulators playing vital roles in plant development and growth. However, little is known about their regulatory roles in tree’s responses to the stressful environments incurred over its long-term growth. Here, we reported the cloning of small RNAs from abiotic stressed tissues of P. trichocarpa and the identification of 68 putative miRNA sequences that can be classified into 27 families based on sequence homology. Among them, 9 families are novel, raising the number of the known ptc-miRNA families from 33 to 42. Total 346 targets are predicted for the cloned ptc-miRNAs using penalty scores of ≤2.5 for mismatched patterns in the miRNA:

ORGANISM(S): Populus trichocarpa

SUBMITTER: Vincent Chiang 

PROVIDER: E-GEOD-10582 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress