Your browser doesn't support javascript.
loading
Adaptive Responses of Hormones to Nitrogen Deficiency in Citrus sinensis Leaves and Roots.
Hua, Dan; Rao, Rong-Yu; Chen, Wen-Shu; Yang, Hui; Shen, Qian; Lai, Ning-Wei; Yang, Lin-Tong; Guo, Jiuxin; Huang, Zeng-Rong; Chen, Li-Song.
Afiliación
  • Hua D; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Rao RY; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Chen WS; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Yang H; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Shen Q; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Lai NW; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Yang LT; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Guo J; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Huang ZR; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
  • Chen LS; College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Plants (Basel) ; 13(14)2024 Jul 12.
Article en En | MEDLINE | ID: mdl-39065452
ABSTRACT
Some citrus orchards in China often experience nitrogen (N) deficiency. For the first time, targeted metabolomics was used to examine N-deficient effects on hormones in sweet orange (Citrus sinensis (L.) Osbeck cv. Xuegan) leaves and roots. The purpose was to validate the hypothesis that hormones play a role in N deficiency tolerance by regulating root/shoot dry weight ratio (R/S), root system architecture (RSA), and leaf and root senescence. N deficiency-induced decreases in gibberellins and indole-3-acetic acid (IAA) levels and increases in cis(+)-12-oxophytodienoic acid (OPDA) levels, ethylene production, and salicylic acid (SA) biosynthesis might contribute to reduced growth and accelerated senescence in leaves. The increased ethylene formation in N-deficient leaves might be caused by increased 1-aminocyclopropanecarboxylic acid and OPDA and decreased abscisic acid (ABA). N deficiency increased R/S, altered RSA, and delayed root senescence by lowering cytokinins, jasmonic acid, OPDA, and ABA levels and ethylene and SA biosynthesis, increasing 5-deoxystrigol levels, and maintaining IAA and gibberellin homeostasis. The unchanged IAA concentration in N-deficient roots involved increased leaf-to-root IAA transport. The different responses of leaf and root hormones to N deficiency might be involved in the regulation of R/S, RSA, and leaf and root senescence, thus improving N use efficiency, N remobilization efficiency, and the ability to acquire N, and hence conferring N deficiency tolerance.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Plants (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Plants (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza