Unpacking the Idea of Modernization of Chinese-Style Higher Education: A Policy Narrative Analysis

Li, Jian; He, Yunshu

doi:10.1163/25902539-05010004

Cited by 1 publication

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“…Using an EPSON EXPRESSION 10000XL root scanner (Seiko Epson Corp., Japan) and WinRHI-ZO software (Pro 2013e, Regent Instruments Inc., Canada), total root length, surface area, mean diameter, volume, number of tips, and number of branches were determined. NO3 --N, NH4 + -N, and total nitrogen in the plant roots were determined using salicylic acid-sulfuric acid colorimetry (Li & Zhang, 2016), ultraviolet spectrophotometry (Sun et al, 2013), and Nessy colorimetry (Bao, 2000).…”

Section: Index Measurementmentioning

confidence: 99%

Effects of arbuscular mycorrhizal fungi on nitrogen uptake in cotton (Gossypium hirsutumL.) under low-nitrogen conditions

Wang,

Cheng

et al. 2024

Preprint

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Cotton is an important global cash crop whose yield and quality are highly influenced by soil nitrogen. Therefore, examining the interactions between roots and arbuscular mycorrhizal fungi (AMF) under reduced nitrogen conditions is of great significance. We investigated the effects of nitrogen application (0, 250, and 375 kg*hm-2) on the AMF infection rate of cotton, the nitrogen content of each organ, root morphological characteristics and biomass, soil extracellular enzyme activity, and soil carbon and nitrogen content using a compartmentalized culture system. The contribution of AMF to plant nitrogen was 10.40, 22.72, and 16.67% under high, low, and no nitrogen treatments, respectively. Under low-nitrogen conditions, the symbiosis between AMF and roots increased root surface area, tip number, branch number, mean diameter, and biomass; and increased soil extracellular enzyme activity (protease, NAG, PER, and PPO), the microbial biomass carbon-to-nitrogen ratio, active carbon content, and the soil nitrogen mineralization rate. Soil NO3--N, NH4+-N, and organic nitrogen content decreased, whereas the absorption of NO3--N by AMF hyphae was higher than that of NH4+-N. Under low-nitrogen conditions, AMF promoted the decomposition of soil organic matter and the transformation of soil nitrogen through the action of hyphal microorganisms.

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Section: Index Measurementmentioning

confidence: 99%