Root-Zone CO2 Concentration Affects Partitioning and Assimilation of Carbon in Oriental Melon Seedlings

Han, Xintong; Jing, Yuna; Xu, Chuanqiang; Gao, Lijia; Li, Minghui; Liu, Yiling; Qi, Hongyan

doi:10.3390/ijms231810694

Cited by 5 publications

(3 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fatty acid methyl esters have strong a nity for ester compounds and can be used as herbicides and herbicide carriers to remove weeds (Sati et found that different times and different concentrations of CO 2 treatments affected the rate of 13 C uptake in the root zone of oriental melon seedlings and altered the assimilation and distribution of 13 C in stems and leaves (Han et al 2022).…”

Section: Introductionmentioning

confidence: 99%

Effects of 13C isotope-labeled allelochemicals on the growth of the invasive plant Alternanthera philoxeroides

Hua

et al. 2023

Preprint

View full text Add to dashboard Cite

The secondary metabolites of indigenous plants have significant allelopathic inhibitory effects on the growth and development of invasive alien plants. Methyl palmitate (MP) and methyl linolenate (ML) of Humulus scandens root extracts were used as exogenous allelopathic substances. The research investigated the differences of allelopathic effects of MP and ML on the growth of seedlings of Alternanthera philoxeroides, and calculated their morphological characteristics, biomass, physiological indicators and the response index (RI). The synthetical allelopathic index (SE) of 1mmol/L MP was the smallest (-0.26) and the allelopathic inhibition was the strongest; therefore, it was selected as a 13C-labeled allelochemical. The distribution of 1mmol/L MP in different parts of A. philoxeroides and the correlation between the biomass ratios of roots, stems and leaves and the 13C content were studied by 13C stable isotope tracing experiments. Atom percent excess (APE) between roots, stems and leaves of A. philoxeroides treated with 1mmol/L MP were significantly different in terms of magnitude, with leaves (0.17%) > roots (0.12%) > stems (0.07%). The root, stem and leaf biomass ratios of invasive weeds had great significant positive correlation with 13C content (p < 0.01, R2 between 0.96 and 0.99). This current research provides a new idea and method for the control of A. philoxeroides, but large-scale popularization remains to be studied.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of 13C isotope-labeled allelochemicals on the growth of the invasive plant Alternanthera philoxeroides

Hua

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…13 C stable isotope tracer technology is an effective means to research the mode of action of allelopathic substances on plants (indirect or direct action) and the dynamic changes of uptake, transport, synthesis and distribution in plants and the strength of allelopathic inhibition in different parts of the plant, and further reveal the allelopathy mechanism of allelochemicals inhibiting the growth of invasive weeds 29 – 31 . Han et al found that different times and different concentrations of CO 2 treatments affected the rate of 13 C uptake in the root zone of oriental melon seedlings and altered the assimilation and distribution of 13 C in stems and leaves 32 .…”

Section: Introductionmentioning

confidence: 99%

Effects of 13C isotope-labeled allelochemicals on the growth of the invasive plant Alternanthera philoxeroides

Hua,

Xie,

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The secondary metabolites of indigenous plants have significant allelopathic inhibitory effects on the growth and development of invasive alien plants. Methyl palmitate (MP) and methyl linolenate (ML) were used as exogenous allelopathic substances. The research investigated the differences of inhibitory effects of MP and ML on the growth of seedlings of Alternantheraphiloxeroides, and calculated their morphological characteristics, biomass, physiological indicators and the response index (RI). The synthetical allelopathic index (SE) of 1 mmol/L MP was the smallest (− 0.26) and the allelopathic inhibition was the strongest; therefore, it was selected as a 13C-labeled allelochemical. The distribution of 1 mmol/L MP in different parts of A.philoxeroides and the correlation between the biomass ratios of roots, stems and leaves and the 13C content were studied by 13C stable isotope tracing experiments. Atom percent excess (APE) between roots, stems and leaves of A.philoxeroides treated with 1 mmol/L MP were significantly different in terms of magnitude, with leaves (0.17%) > roots (0.12%) > stems (0.07%). The root, stem and leaf biomass ratios of invasive weeds had great significant positive correlation with 13C content (p < 0.01, R2 between 0.96 and 0.99). This current research provides a new idea and method for the control of A.philoxeroides, but large-scale popularization remains to be studied.

show abstract

“…Method (i) applies the high abundance 13 C labeling and then calculates the ratio of soil DIC fixed in specific tissues or organs to the total carbon gain. The total carbon gain includes soil DIC fixation, apparent photosynthesis measured by commercial infrared gas analyzers, and respiration [20,28]. However, this calculation is not directly linked to photosynthesis.…”

Section: Introductionmentioning

confidence: 99%

Species-Specific and Altitude-Induced Variation in Karst Plants’ Use of Soil Dissolved Inorganic Carbon

Rao

2022

Agronomy

View full text Add to dashboard Cite

Root-derived carbon sources supporting photosynthesis have been demonstrated to contribute to plant carbon gain in many laboratory experiments. However, it remains largely unknown whether and to what extent soil dissolved inorganic carbon (DIC) influences leaf photosynthesis in karst habitats characterized by alkaline soils with low water content. We explored this relationship by measuring the concentrations and carbon isotope signals (δ13C) of soil DIC, as well as the δ13C of water-soluble organic matter (δWSOM) in leaves of nine woody species across an altitudinal gradient in karst habitats. The δWSOM varied among species by 7.23‰ and deviated from the δ13C of photosynthates solely assimilated from atmospheric CO2 (δA) by 0.44–5.26‰, with a mean value of 2.20‰. This systematical discrepancy (δA − δWSOM) could only be explained by the contribution of soil DIC to leaf total photosynthesis (fDIC_soil). The average values of fDIC_soil considerably varied among the nine species, ranging from 2.48% to 9.99%, and were comparable with or slightly lower than those of previous laboratory experiments. Furthermore, the fDIC_soil of two species significantly increased with altitude, whereas another species exhibited an opposite pattern, suggesting a highly spatial heterogeneity of DIC utilization. The present study improved our understanding of how plants adapt to the alkaline–drought soil conditions of karst habitats and thus acquire additional carbon for growth.

show abstract

Root-Zone CO2 Concentration Affects Partitioning and Assimilation of Carbon in Oriental Melon Seedlings

Cited by 5 publications

References 55 publications

Effects of 13C isotope-labeled allelochemicals on the growth of the invasive plant Alternanthera philoxeroides

Effects of 13C isotope-labeled allelochemicals on the growth of the invasive plant Alternanthera philoxeroides

Effects of 13C isotope-labeled allelochemicals on the growth of the invasive plant Alternanthera philoxeroides

Species-Specific and Altitude-Induced Variation in Karst Plants’ Use of Soil Dissolved Inorganic Carbon

Contact Info

Product

Resources

About