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| DOI: | 10.1111/nph.16639 |
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| Web URL(s): | https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.16639
Last checked: 1/19/2021
https://nph.onlinelibrary.wiley.com/doi/epdf/10.1111/nph.16639
Last checked: 1/19/2021
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Cabrera, Juan C. Baca;
Hirl, Regina T.;
Zhu, Jianjun;
Schäufele, Rudi;
Schnyder, Hans |
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| Author Affiliation: | Lehrstuhl für Grünlandlehre, Technische Universität Munchen, Alte Akademie, Freising-Weihenstephan, Germany |
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| Title: | Atmospheric CO2 and VPD alter the diel oscillation of leaf elongation in perennial ryegrass: Compensation of hydraulic limitation by stored-growth |
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| Section: | Research
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Full papers
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| Source: | New Phytologist. Vol. 227, No. 6, September 2020, p. 1776-1789. |
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| Publishing Information: | Oxford, England, United Kingdom: Blackwell Publishing, for the New Phytologist Trust |
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| # of Pages: | 14 |
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| Keywords: | Author-Supplied Keywords: CO2; Diurnal oscillation; Leaf growth; Leaf water potential; Lolium perenne (perennial ryegrass); Osmotic potential; Vapor pressure deficit (VPD); Water-soluble carbohydrates
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| Abstract/Contents: | "We explored the effects of atmospheric CO2 concentration (Ca) and vapor pressure deficit (VPD) on putative mechanisms controlling leaf elongation in perennial ryegrass. Plants were grown in stands at a Ca of 200, 400 or 800 lmol mol-1 combined with high (1.17 kPa) or low (0.59 kPa) VPD during the 16 h-day in well-watered conditions withreduced nitrogen supply. We measured day : night-variation of leaf elongation rate(LERday: LERnight), final leaf length and width, epidermal cell number and length, stomatalconductance, transpiration, leaf water potential and water-soluble carbohydrates and osmoticpotential in the leaf growth-and-differentiation zone (LGDZ). Daily mean LER or morphometric parameters did not differ between treatments, but LERonight strongly exceeded LERday, particularly at low Ca and high VPD. Across treatments LERday was negatively related to transpiration (R2= 0.75) and leaf water potential (R2= 0.81),while LERnight was independent of leaf water potential or turgor. Enhancement of LERnight over LERday was proportional to the turgor-change between day and night (R2= 0.93). LGDZsugar concentration was high throughout diel cycles, providing no evidence of source limita-tion in any treatment. Our data indicate a mechanism of diel cycling between daytime hydraulic and night-timestored-growth controls of LER, buffering Ca and daytime VPD effects on leaf elongation." |
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| Language: | English |
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| References: | 81 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Cabrera, J. C. B., R. T. Hirl, J. Zhu, R. Schäufele, and H. Schnyder. 2020. Atmospheric CO2 and VPD alter the diel oscillation of leaf elongation in perennial ryegrass: Compensation of hydraulic limitation by stored-growth. New Phytol. 227(6):p. 1776-1789. |
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| DOI: 10.1111/nph.16639 |
| Web URL(s):
https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.16639
Last checked: 1/19/2021
https://nph.onlinelibrary.wiley.com/doi/epdf/10.1111/nph.16639
Last checked: 1/19/2021
Requires: PDF Reader |
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MSU catalog number: b2219226 |
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