Genome-Wide Identification of MicroRNAs in Response to Low Nitrate Availability in Maize Leaves and Roots Xu, Zhenhua ; Zhong, Sihui ; Li, Xinhai ; Li, Wenxue ; Rothstein, Steven J. ; Zhang, Shihuang ; Bi, Yongmei ; Xie, Chuanxiao Abstract Publication: PLoS ONE Pub Date: November 2011 DOI: 10.1371/journal.pone.0028009 Bibcode: 2011PLoSO...628009X