Phosphorus and Iron Deficiencies Influences Rice Shoot Growth in an Oxygen Dependent Manner: Insight from Upland and Lowland Rice

International Journal of Molecular Sciences

Chanakan Prom-u-thai¹  Nadia Bouain²  Nanthana Chaiwong²  Jenjira Mongon²  David Secco²  Hatem Rouached² 

[1] Agronomy Division, Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, 50200 Chiang Mai, Thailand;Biochimie et Physiologie Moléculaire des Plantes Research Unit, Institut National de la Recherche Agronomique—Centre National de la Recherche Scientifique—Montpellier University, 34060 Montpellier, France;

关键词: rice;    phosphate;    iron;    oxygen;    signaling crosstalk;   

DOI  :  10.3390/ijms18030607

来源: DOAJ

【 摘 要 】

Rice is the main staple crop for one-third of the world population. To maximize yields, large quantities and constant input of fertilizers containing essential nutrients such as phosphorus (P) and iron (Fe) are added. Rice can germinate in both aerobic and anaerobic conditions, but the crosstalk between oxygen (O2) and nutrients such as P and Fe on plant growth remains obscure. The aim of this work was to test whether such interactions exist, and, if so, if they are conserved between up- and lowland rice varieties. To do so, we assessed shoot and root biomass as well as inorganic phosphate (Pi) accumulation in four rice varieties, including two lowland rice varieties Nipponbare and Suphanburi 1 (SPR1) (adapted to non-aerated condition) and two upland rice varieties CMU122 and Sew Mae Jun (SMJ) (adapted to aerated condition) under various conditions of Pi and/or Fe deficiencies, in aerated and non-areated solution. Under these different experimental conditions, our results revealed that the altered shoot biomass in Nipponbare and SPR1 was O2-dependent but to a lesser extent in CMU122 and SMJ cultivars. In this perspective, discovering the biological significance and molecular basis of these mineral elements and O2 signal interaction is needed to fully appreciate the performance of plants to multiple environmental changes.

【 授权许可】

Unknown