OsPK2,W59,OsPKpalpha1

• Symbol: OsPK2,W59,OsPKpalpha1
• MSU: LOC_Os07g08340
• RAPdb: Os07g0181000

• OsPK2 encodes a plastidic pyruvate kinase involved in rice endosperm starch synthesis, compound granule formation and grain filling., 2018, Plant Biotechnol J.
• OsPKpα1 encodes a plastidic pyruvate kinase that affects starch biosynthesis in the rice endosperm., 2018, J Integr Plant Biol.

Genbank accession number

• OsPK2 encodes a plastidic pyruvate kinase involved in rice endosperm starch synthesis, compound granule formation and grain filling.
• Altogether, these results denote new insights into the role of OsPK2 in plant seed development, especially in starch synthesis, compound granules formation and grain filling, which would be useful for genetic improvement of high yield and rice grain quality
• The normal starch compound granules were drastically reduced and more single granules filled the endosperm cells of ospk2
• Map-based cloning of OsPK2 indicated that it encodes a pyruvate kinase (PK, ATP: pyruvate 2-O-phosphotranferase, EC 2

• OsbZIP60, OsPK2~W59~OsPKpalpha1, OsbZIP60-mediated unfolded protein response regulates grain chalkiness in rice., Furthermore, OsbZIP60 is found to activate the expression of key genes related to grain chalkiness, such as GPA3, FSE1, FLO7, Chalk5, OsNF-YB1, and OsPK2, whose expression is significantly suppressed in osbzip60 and overexpression lines of OsbZIP50, OsBiP1, OsBiP2, and OsBiP3