The amino acid transporter OsAAP1 regulates the fertility of spikelets and the efficient use of N in rice

OsG6PGH1 affects various grain quality traits and participates in the salt stress response of rice

“…AAPs are involved in various physiological metabolic processes in plants, and affect rice growth and development ( Fang et al., 2021 ). In the rice genome, 19 OsAAPs ( OsAAP1 – 19 ) have been identified, with most of them isolated, cloned, and identified ( Peng et al., 2014 ; Taylor et al., 2015 ; Lu et al., 2018 ; Wang et al., 2019 ; Ji et al., 2020 ; Wang et al., 2020 ; Fang et al., 2021 ; Erinaldo et al., 2022 ; Yang et al., 2022 ; Yang et al., 2023a , b ; Peng et al., 2024 ). Among them, OsAAP6 is a major quantitative trait locus gene that positively regulates GPC and nutritional quality of rice ( Peng et al., 2014 , 2019 ).…”

“…A total of 19 OsAAPs have been identified from rice, and most of them have been cloned and functionally identified. Of them, OsAAP1 and OsAAP4 regulate absorption and redistribution of neutral amino acids, thereby regulating rice growth, development, and yield ( Ji et al., 2020 ; Fang et al., 2021 ; Erinaldo et al., 2022 ); OsAAP3 and OsAAP5 mainly transport alkaline amino acids, and have a negative effect on rice tillering and yield ( Lu et al., 2018 ; Wang et al., 2019 ); OsAAP6 positively regulates GPC, thereby affecting the nutritional quality of rice ( Peng et al., 2014 ); OsAAP7 and OsAAP16 can transport most amino acids (excepting aspartic acid and β-alanine) ( Taylor et al., 2015 ); OsAAP8 mutation significantly increases GPC and amino acid contents ( Peng et al., 2024 ); OsAAP10 and OsAAP11 regulate starch and protein contents in rice grains by affecting the transport of acidic and neutral amino acids, respectively ( Wang et al., 2020 ; Yang et al., 2023a ); OsAAP13 is mainly involved in amino acid transportation in above-ground parts of rice, and plays an important role in rice growth, development, and stress regulation ( Nie et al., 2023 ); OsAAP14 is involved in nitrogen metabolism and positively regulates rice axillary bud growth, tillering, and yield ( Yang et al., 2022 ); OsAAP15 affects rice yield by regulating panicle branch development ( Yang et al., 2023b ); and OsAAP17 -related alleles positively regulate yield per plant in indica rice ( Itishree et al., 2023 ). Thus, OsAAPs play important roles in regulating rice yield and quality traits.…”

Sustaining nitrogen dynamics: A critical aspect for improving salt tolerance in plants

“…It has been revealed that target of TOR is repressed in N-deprived seedlings, however, resupply of N sources such as NO 3 -, NH 4 + , amino acids promptly reactivates TOR kinase (Liu et al, 2018). Further, it has been speculated that a number of amino acid permeases (AAP) family, including AAP1, AAP2, AAP3, AAP6, AAP7, AAP8, and AAP16, have a variety of roles in the transport of amino acids (Zhao et al, 2012;Cheng et al, 2016;Wang et al, 2022;Pereira et al, 2022). The families of cationic amino acid transporters (CAT), oligopeptide transporters (OPT), lysine-histidine like transporters (LHT), proline transporters (ProT), and aromatic and neutral amino acid transporters (ANT) have also been identified as having the potential to transport amino acids (Feng et al, 2018;Lin et al, 2019;Guo et al, 2020;Kurt and Filiz, 2022).…”