Impacts of nitrogen on physiological interactions of the hemiparasitic Santalum album and its N2-fixing host Dalbergia odorifera

Meng, Sen; B., H.; Li, Z. S.; Yang, Fucheng; Wang, Shengkun; Lu, Junkun

doi:10.1007/s00468-021-02103-0

Cited by 7 publications

(5 citation statements)

References 57 publications

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“…The results showed that the Fv/Fm values decreased under drought stress, and Fv/Fm decreased significantly under moderate and severe drought stress. The SPAD values of plant leaves were significantly positively correlated with the chlorophyll and N contents [ 9 ]. In this experiment, the SPAD values showed an upward trend with increasing drought stress intensity, which may be because the chlorophyll concentrations increased with decreasing leaf water content ( Figure 2 D).…”

Section: Discussionmentioning

confidence: 99%

“…In this experiment, the SPAD values showed an upward trend with increasing drought stress intensity, which may be because the chlorophyll concentrations increased with decreasing leaf water content ( Figure 2 D). The SPAD values in the leaves of S. album grown with hosts were significantly higher than those without a host, which may be because the hosts provided more N elements to S. album [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

“…According to the transcriptome data, under normal water supply conditions, the DEGs between plants grown with hosts and those grown without hosts were mainly related to carbon metabolism, auxin, and gibberellin. The gene expression levels of S. album grown with hosts were significantly upregulated, and the gene expressions related to auxin negative regulation were downregulated, which may be because the host promoted S. album growth [ 9 ]. Under mild drought conditions, the DEGs were mainly concentrated in the antioxidant substances and the antenna protein synthesis pathways.…”

Section: Discussionmentioning

confidence: 99%

“…Host species were found to influence the connections, haustorial numbers, chlorophyll contents, and sizes of S. album seedlings, and S. album trees grown with suitable hosts exhibited better growth. The study found that N and parasitism had significant interactive effects on total biomass amounts [ 9 ]. S. album seedlings grown with an N-fixing host exhibited higher net photosynthetic rates and biomass [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Drought and Host on the Growth of Santalum album Seedlings in Pot Culture

Zhang

Liu²,

Xu³

et al. 2022

IJMS

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Santalum album is a semi parasitic plant and its growth is often restricted due to a lack of a host or water during plantation establishment. In this study, the effects of water and the host on the growth of S. album seedlings were studied in pot culture. The results showed that the net photosynthetic rate and height of S. album seedlings decreased significantly under drought stress. Compared with the seedlings of S. album grown without a host, the host could significantly increase the growth of S. album seedlings. The contents of soluble sugar and proline in S. album leaves increased significantly under drought stress. Drought stress resulted in a significant accumulation of malondialdehyde, increments of antioxidant enzymes activity, and non-enzymatic antioxidant substances. Antioxidant capacity was stronger and malondialdehyde content was lower in the seedling leaves of S. album with a host than in the seedlings without a host. RNA-seq was used to analyze the transcription expression profiles of S. album leaves and the results were consistent with the physiological data. These results indicate that the host can promote the seedling growth of S. album and it can increase the antioxidant capacity and osmotic adjustment substance content of the seedlings of S. album, alleviating the damage caused by drought.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Drought and Host on the Growth of Santalum album Seedlings in Pot Culture

Zhang

Liu²,

Xu³

et al. 2022

IJMS

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“…Some studies have shown that the application of ammonium nitrate and ammonium sulfate can significantly reduce O. ramose L. effects on tomatoes and tobacco [17]; the application of N fertilizer can reduce the parasitism of Striga asiatica on sorghum [18] and Orobanche foetida on broad bean [19]. The hemiparasite Santalum album was effectively inhibited by the application of high concentrations of nitrate [20]. The application of superphosphates can considerably reduce the parasitism of Orobanche minor Sm.…”

Section: Introductionmentioning

confidence: 99%

Silicon Fertilization Improves Sunflower Rhizosphere Microbial Community Structure and Reduces Parasitism by Orobanche cumana Wallr.

Xu,

Ke,

Wang

et al. 2024

Agronomy

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Sunflower broomrape (Orobanche cumana Wallr.) has severely restricted the development of the sunflower industry in China, and more efficient and convenient control methods are urgently needed. In this experiment, we investigated the effects of N, P and silica fertilizers on the parasitism rate of O. cumana, as well as on the yield of sunflower and native microbial communities in the field. Firstly, pot experiments were conducted to select the most effective fertilization method and to determine the physiological and biochemical indexes of sunflowers. Subsequently, field application studies were carried out to determine the physiological indexes, yield, O. cumana parasitism on sunflower, and the effect on the indigenous microbial community. The results demonstrate that compared with the CNP treatment (Control), the number of parasites under the N1P5 treatment significantly decreased by 66.15%. The exogenous application of silica can significantly reduce the number of O. cumana parasites. The treatments with N1P5 (N/P = 1:5) and available SiO2 content higher than 40 mg/kg (NS2, NS3, SF2 and SF3) significantly increased superoxide dismutase (SOD) activity and decreased malondialdehyde (MDA) content in sunflower leaves. In the field, fertilization significantly decreased the number of O. cumana parasites. The S treatment improved the native microbial community structure and enriched beneficial microorganisms, including Vicinamibacteria and Pyrinomonadaceae. Additionally, applying the S treatment significantly increased sunflower yield by 23.82% and crude protein content by 20.20%. In summary, the application of silicon fertilizer can effectively improve the host microbial community, reduce O. cumana parasitism and improve the yield and quality of sunflower.

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Ecological stoichiometry and adaptations to drought and nitrogen in Hevea brasiliensis and Dalbergia odorifera in different planting patterns

Li,

Cisse,

Miao

et al. 2024

Environmental and Experimental Botany

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Impacts of nitrogen on physiological interactions of the hemiparasitic Santalum album and its N2-fixing host Dalbergia odorifera

Cited by 7 publications

References 57 publications

Effects of Drought and Host on the Growth of Santalum album Seedlings in Pot Culture

Effects of Drought and Host on the Growth of Santalum album Seedlings in Pot Culture

Silicon Fertilization Improves Sunflower Rhizosphere Microbial Community Structure and Reduces Parasitism by Orobanche cumana Wallr.

Ecological stoichiometry and adaptations to drought and nitrogen in Hevea brasiliensis and Dalbergia odorifera in different planting patterns

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