Oryza coarctata,synonymPorteresia coarctata, is aspecies of grass which is related to other rice species in theOryzeaebotanical tribe, part of the familyPoaceae. It is native toPakistan,India,Bangladesh, andMyanmar.[1] It is a perennial species that shows substantial underground rhizomatous growth. The rhizome tissues give out aerial shoots in a favourable season.[2]
Oryza coarctata is a form of wild rice that grows in saline estuaries and is harvested and eaten as a delicacy.[3] The plant is salt-tolerant, and is seen as a possibly important source of salt-tolerance genes for transfer to other rice species.[4][5] It is closely related toOryza australiensis.[6] The leaves of this species secrete salt through special microhair like structures that have three distinctmorphotypes, and a method to isolate these structures has been developed.[7] The rhizomes store a significant amount of salt and also control the flow of salt to the developing shoots.[8][9]
^Jagtap, T.G., Bhosale, S. and Charulata, S., 2006. Characterization of Porteresia coarctata beds along the Goa coast, India. Aquatic Botany, 84(1), pp.37-44.
^Rajakani, Raja; Sellamuthu, Gothandapani; Saravanakumar, V.; Kannappan, S.; Shabala, Lana; Meinke, Holger; Chen, Zhonghua; Zhou, Meixue; Parida, Ajay; Shabala, Sergey & Venkataraman, Gayatri (2019). "Microhair on the adaxial leaf surface of salt secreting halophyticOryza coarctata Roxb. show distinct morphotypes: Isolation for molecular and functional analysis".Plant Science.285:248–257.Bibcode:2019PlnSc.285..248R.doi:10.1016/j.plantsci.2019.05.004.PMID31203890.S2CID164424933.
^Rajakani, R., Sellamuthu, G., Ishikawa, T., Ahmed, H.A.I., Bharathan, S., Kumari, K., Shabala, L., Zhou, M., Chen, Z.H., Shabala, S. and Venkataraman, G., 2021. Reduced apoplastic barriers in tissues of shoot-proximal rhizomes of Oryza coarctata are associated with Na+ sequestration. Journal of Experimental Botany.
^ Somasundaram, S., Véry, A.A., Vinekar, R.S., Ishikawa, T., Kumari, K., Pulipati, S., Kumaresan, K., Corratgé-Faillie, C., Sowdhamini, R., Parida, A. and Shabala, L., 2020. Homology modeling identifies crucial amino-acid residues that confer higher Na+ transport capacity of OcHKT1; 5 from Oryza coarctata Roxb. Plant and Cell Physiology, 61(7), pp.1321-1334.
