Effects of Suillus luteus and S. bovinus on the physiological response and nutrient absorption of Pinus massoniana seedlings under phosphorus deficiency

2022 ◽  
Author(s):  
Houying Chen ◽  
Wenxuan Quan ◽  
Haiyan Liu ◽  
Guijie Ding
Keyword(s):  
Physiological Response ◽  
Phosphorus Deficiency ◽  
Pinus Massoniana ◽  
Nutrient Absorption ◽  
Suillus Luteus

Physiological Response of Phosphorus-Efficient and Inefficient Soybean Genotypes under Phosphorus-Deficiency

2020 ◽  
Vol 67 (1) ◽  
pp. 175-184
Author(s):  
Q. Zhu ◽  
H. Wang ◽  
Y. Z. Shan ◽  
H. Y. Ma ◽  
H. Y. Wang ◽  
...  
Keyword(s):  
Physiological Response ◽  
Phosphorus Deficiency ◽  
Soybean Genotypes

scholarly journals Effects of phosphorus deficiency on the absorption of mineral nutrients, photosynthetic system performance and antioxidant metabolism in Citrus grandis

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246944
Author(s):  
Xin Meng ◽  
Wei-Wei Chen ◽  
Yan-Yu Wang ◽  
Zeng-Rong Huang ◽  
Xin Ye ◽  
...  
Keyword(s):  
Phosphorus Deficiency ◽  
Photosynthetic Apparatus ◽  
Dry Weight ◽  
Photosynthetic Performance ◽  
Nutrient Absorption ◽  
Monodehydroascorbate Reductase ◽  
Donor Side ◽  
Antioxidant Metabolism ◽  
P Deficiency ◽  
Acceptor Side

Phosphorus (P) is an essential macronutrient for plant growth, development and production. However, little is known about the effects of P deficiency on nutrient absorption, photosynthetic apparatus performance and antioxidant metabolism in citrus. Seedlings of ‘sour pummelo’ (Citrus grandis) were irrigated with a nutrient solution containing 0.2 mM (Control) or 0 mM (P deficiency) KH2PO4 until saturated every other day for 16 weeks. P deficiency significantly decreased the dry weight (DW) of leaves and stems, and increased the root/shoot ratio in C. grandis but did not affect the DW of roots. The decreased DW of leaves and stems might be induced by the decreased chlorophyll (Chl) contents and CO2 assimilation in P deficient seedlings. P deficiency heterogeneously affected the nutrient contents of leaves, stems and roots. The analysis of Chl a fluorescence transients showed that P deficiency impaired electron transport from the donor side of photosystem II (PSII) to the end acceptor side of PSI, which showed a greater impact on the performance of the donor side of PSII than that of the acceptor side of PSII and photosystem I (PSI). P deficiency increased the contents of ascorbate (ASC), H2O2 and malondialdehyde (MDA) as well as the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR) and glutathione reductase (GR) in leaves. In contrast, P deficiency increased the ASC content, reduced the glutathione (GSH) content and the activities of SOD, CAT, APX and monodehydroascorbate reductase (MDHAR), but did not increase H2O2 production, anthocyanins and MDA content in roots. Taking these results together, we conclude that P deficiency affects nutrient absorption and lowers photosynthetic performance, leading to ROS production, which might be a crucial cause of the inhibited growth of C. grandis.

scholarly journals Identification of candidate genes conferring tolerance to aluminum stress in Pinus massoniana inoculated with ectomycorrhizal fungus

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Haiyan Liu ◽  
Houying Chen ◽  
Guijie Ding ◽  
Kuaifen Li ◽  
Qifei Ren
Keyword(s):  
Candidate Genes ◽  
Ectomycorrhizal Fungi ◽  
Molecular Mechanisms ◽  
Functional Characterization ◽  
Pinus Massoniana ◽  
Antioxidant Enzyme Activities ◽  
Al Tolerance ◽  
Suillus Luteus ◽  
Al Stress ◽  
Wide Range

Abstract Background Pinus massoniana Lamb. is an important afforestation tree species with high economic, ecological and medicinal values. Aluminum (Al) toxicity driven by soil acidification causes dieback of P. massoniana plantations. Previous studies showed that ectomycorrhizal fungi alleviate Al stress damages in Pinus, but the underlying molecular mechanisms and key genes induced by ectomycorrhizal fungi inoculation under Al stress in Pinus have not been explored. Herein, we applied Al stress for 60 days to P. massoniana seedlings inoculated with Suillus luteus (SL) and those non-inoculated. Then, we compared their growth parameters and transcriptome in order to detect candidate genes induced by SL conferring Al tolerance in P. massoniana. Result Our results showed that SL inoculation confers Al stress tolerance in P. massoniana through improved growth performance, strong antioxidant enzyme activities and reduced malondialdehyde accumulation as compared to non-inoculated seedlings. Transcriptome sequencing further supported these findings as very few genes (51 genes) were transcriptionally altered by Al in SL inoculated plants as compared to non-inoculated plants (2140 genes). We identified three core genes (cox1, cox3 and Nd1) that were strongly up-regulated by Al in the SL inoculated plants but were down-regulated in the non-inoculated plants. We also identified 42 genes specifically regulated by SL inoculated plants under Al stress, which are involved in a wide range of biological processes such as antioxidative response, transporters, hormone signaling and plant pathogen infection responses. Conclusions Altogether, our data suggest that SL inoculation induces priming of key stress response pathways and triggers specific genes that efficiently alleviate Al stress effects in P. massoniana. The candidate genes resources generated in this study are of utmost importance for functional characterization and molecular studies aiming at improving Al tolerance in plants.

scholarly journals The Effects of Suillus Luteus Inoculation on Rhizospheric Fungal Community Diversity and Structure of Pinus Massoniana in Mining Area

2020 ◽  
Author(s):  
Peiyi Yu ◽  
Chen Ning ◽  
Jingzhen Chen ◽  
Fan Zhu ◽  
Airong Shen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Community Structure ◽  
Fungal Community ◽  
Soil Enzymes ◽  
Pinus Massoniana ◽  
Mining Area ◽  
Fungal Communities ◽  
Bulk Soil ◽  
Suillus Luteus ◽  
Ecm Fungi

Abstract BackgroundAs important decomposers and plant symbionts, soil fungal communities play a major role in remediating heavy metal polluted soils. However, diversity and structure of fungal communities generally remain unclear in mining area. This study aimed to assess the rhizospheric fungal community composition of masson’s pine (Pinus massoniana) in lead-zinc mining area of Suxian district, Hunan Province, China. The experiment was treated as three ways: masson’s pine inoculated with or without Suillus luteus and bulk soil without plant as control. ResultsThe results showed that the inoculation of ectomycorrhizal fungi could enlarge the plants’ capability to absorb heavy metals and secrete soil enzymes. The richness and diversity of fungi in rhizospheric soil were significantly higher than bulk soil (p＜0.05), but no obvious difference between rhizospheric soils inoculated with and without ectomycorrhizal (ECM) fungi while the community structure was changed. The rhizospheric fungi belong to 6 phylum, 25 classes, 65 orders, 115 families and 150 genera and the dominant phyla were Chytridiomycota (50.49%), Ascomycota (38.54%), and Basidiomycota (9.02%). By using LEfSe and heatmap, the relative abundance of Suillus, Paraglomus, Agaricus, and Tulasnella were the highest with ECM fungi inoculation. Redundant analysis (RDA) showed that the community structure significantly changed with ECM fungi inoculation, which was significantly related to soil water content, carbon nitrogen ratio, bulk density, available potassium, and soil enzymes. ConclusionsAll together, the inoculation with ECM fungi may change the inhabit environment of microorganisms and the dominant fungi in soil, which provided a screening of keystone species in the heavy metal-contaminated mining area.

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