Abstract
Since the discovery that small RNAs can be used as versatile tools for regulating gene expression and thus monitoring various cellular and developmental processes, applications of this technology have transformed different areas of plant research. In this chapter, we assess the current state of their utilities for crop breeding to pursue attractive new agronomical traits or to improve crop tolerance to biotic and abiotic stressors. Moreover, we elaborate on recent developments regarding the use of small regulatory RNA in plants for priming stress resistance, epigenetic manipulation, and plant protection in their cross-kingdom interactions. In addition, future scopes and challenges while breeding tomorrow’s advanced crop cultivars are also discussed.
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