Carbon–Phosphorus Coupling Governs Microbial Effects on Nutrient Acquisition Strategies by Four Crops

• DOI: 10.3389/fpls.2022.924154
• Publication Date: 2022-07-05T08:06:52Z
• Authors: Deshan Zhang; Yuqiang Zhang; Zheng Zhao; Sixin Xu; Shumei Cai; Haitao Zhu; Zed Rengel; Yakov Kuzyakov
• Keywords: 2. Zero hunger; root–microbe interaction; crop P-use efficiency; Plant culture; root morphological and exudation traits; Plant Science; 04 agricultural and veterinary sciences; 15. Life on land; SB1-1110; 0401 agriculture, forestry, and fisheries; phosphate-solubilizing microorganisms; fungi; bacteria

Plants adjust root morphological and/or exudation traits in response to phosphorus (P) mobilization mediated by microorganisms. We hypothesized that straw application coupled with P fertilization would influence microbial and then nutrient-acquisition strategies related crop growth. Root (length average diameter) (acid phosphatase carboxylates) of Brassica chinensis, Solanum lycopersicum, Lactuca sativa, Vigna unguiculata dynamics were characterized no-P P-fertilized soil with/without addition. Straw addition increased the growth fungi bacteria, stimulating immobilization at day 24. The high abundance was associated four tested crops having short roots straw-amended compared no-straw In soil, B. chinensis S. lycopersicum shifted toward P-acquisition based on fast elongation strong carboxylate from days 24 40. Such effective together release shoot content those without Conversely, L. sativa V. produced stable (or even increased) after till stimulated unguiculata, whereas decreased but non-fertilized treatment summary, differed among species. Phosphorus needs be highlighted when returning enhance P-use efficiency vegetable cropping systems.