Xiurong Wang1, Shaopeng Zhao2, Heike Bücking3. 1. Root Biology Center, College of Agriculture, South China Agricultural University, Guangzhou 510642, China South Dakota State University, Biology and Microbiology Department, Brookings, SD 57007, USA. 2. Root Biology Center, College of Agriculture, South China Agricultural University, Guangzhou 510642, China. 3. South Dakota State University, Biology and Microbiology Department, Brookings, SD 57007, USA heike.bucking@sdstate.edu.
Abstract
BACKGROUND AND AIMS: Arbuscular mycorrhizal (AM) fungi play a key role in the phosphate (P) uptake of many important crop species, but the mechanisms that control their efficiency and their contribution to the P nutrition of the host plant are only poorly understood. METHODS: The P uptake and growth potential of two soybean genotypes that differ in their root architectural traits and P acquisition efficiency were studied after colonization with different AM fungi and the transcript levels of plant P transporters involved in the plant or mycorrhizal P uptake pathway were examined. KEY RESULTS: The mycorrhizal growth responses of both soybean genotypes ranged from highly beneficial to detrimental, and were dependent on the P supply conditions, and the fungal species involved. Only the colonization with Rhizophagus irregularis increased the growth and P uptake of both soybean genotypes. The expression of GmPT4 was downregulated, while the mycorrhiza-inducible P transporter GmPT10 was upregulated by colonization with R. irregularis Colonization with both fungi also led to higher transcript levels of the mycorrhiza-inducible P transporter GmPT9, but only in plants colonized with R. irregularis were the higher transcript levels correlated to a better P supply. CONCLUSIONS: The results suggest that AM fungi can also significantly contribute to the P uptake and growth potential of genotypes with a higher P acquisition efficiency, but that mycorrhizal P benefits depend strongly on the P supply conditions and the fungal species involved.
BACKGROUND AND AIMS: Arbuscular mycorrhizal (AM) fungi play a key role in the phosphate (P) uptake of many important crop species, but the mechanisms that control their efficiency and their contribution to the P nutrition of the host plant are only poorly understood. METHODS: The P uptake and growth potential of two soybean genotypes that differ in their root architectural traits and P acquisition efficiency were studied after colonization with different AM fungi and the transcript levels of plant P transporters involved in the plant or mycorrhizal P uptake pathway were examined. KEY RESULTS: The mycorrhizal growth responses of both soybean genotypes ranged from highly beneficial to detrimental, and were dependent on the P supply conditions, and the fungal species involved. Only the colonization with Rhizophagus irregularis increased the growth and P uptake of both soybean genotypes. The expression of GmPT4 was downregulated, while the mycorrhiza-inducible P transporter GmPT10 was upregulated by colonization with R. irregularis Colonization with both fungi also led to higher transcript levels of the mycorrhiza-inducible P transporter GmPT9, but only in plants colonized with R. irregularis were the higher transcript levels correlated to a better P supply. CONCLUSIONS: The results suggest that AM fungi can also significantly contribute to the P uptake and growth potential of genotypes with a higher P acquisition efficiency, but that mycorrhizal P benefits depend strongly on the P supply conditions and the fungal species involved.
Authors: Jerry A Mensah; Alexander M Koch; Pedro M Antunes; E Toby Kiers; Miranda Hart; Heike Bücking Journal: Mycorrhiza Date: 2015-02-24 Impact factor: 3.387
Authors: Kevin R Cope; Arjun Kafle; Jaya K Yakha; Philip E Pfeffer; Gary D Strahan; Kevin Garcia; Senthil Subramanian; Heike Bücking Journal: Mycorrhiza Date: 2022-05-05 Impact factor: 3.387
Authors: Sonia Campo; Héctor Martín-Cardoso; Marta Olivé; Eva Pla; Mar Catala-Forner; Maite Martínez-Eixarch; Blanca San Segundo Journal: Rice (N Y) Date: 2020-06-22 Impact factor: 4.783
Authors: Tünde Takács; Imre Cseresnyés; Ramóna Kovács; István Parádi; Bettina Kelemen; Tibor Szili-Kovács; Anna Füzy Journal: Front Plant Sci Date: 2018-11-13 Impact factor: 5.753