info:oai:icrisat:8903info:ofi/fmt:xml:xsd:journalSantisreePSantisree, PBhatnagar-MathurPBhatnagar-Mathur, PSharmaK KSharma, K K0168-945244-55NO to drought-multifunctional role of nitric oxide in plant drought: Do we have all the answers?239Plant ScienceOctober 2015article