scholarly journals Estimation of phloem carbon translocation belowground at stand level in a hinoki cypress stand

2018 ◽  
Vol 39 (2) ◽  
pp. 320-331 ◽  
Author(s):  
Daniel Epron ◽  
Masako Dannoura ◽  
Atsushi Ishida ◽  
Yoshiko Kosugi
Keyword(s):  
Hinoki Cypress ◽  
Carbon Translocation

Carbon Partitioning and Herbicide Transport in Glyphosate-Treated Sugarbeet (Beta vulgaris)

Weed Science ◽  
1984 ◽  
Vol 32 (4) ◽  
pp. 546-551 ◽  
Author(s):  
Judy A. Gougler ◽  
Donald R. Geiger
Keyword(s):  
Beta Vulgaris ◽  
Carbon Metabolism ◽  
Carbon Partitioning ◽  
Starch Accumulation ◽  
Carbon Export ◽  
Carbon Translocation ◽  
Herbicide Transport

Glyphosate [N-(phosphonomethyl)glycine] had several effects on carbon translocation in sugarbeet (Beta vulgarisL. ‘Klein E multigerm’): a) import of carbon by sink leaves was inhibited, b) net starch accumulation in source leaves was stopped, and c) carbon export from source leaves in the dark was stopped following 10 h of treatment in the light. During periods when no carbon was exported, glyphosate also was not transported from treated leaves. The limitation of glyphosate transport, resulting from disruption of carbon metabolism, appears important in the study and use of the herbicide.

scholarly journals Ocean acidification increases photosynthate translocation in a coral–dinoflagellates symbiosis

2013 ◽  
Vol 10 (1) ◽  
pp. 83-109 ◽  
Author(s):  
P. Tremblay ◽  
M. Fine ◽  
J. F. Maguer ◽  
R. Grover ◽  
C. Ferrier-Pagès
Keyword(s):  
Coral Species ◽  
Total Carbon ◽  
Coral Host ◽  
Climate Change Scenarios ◽  
Symbiotic Association ◽  
Stylophora Pistillata ◽  
Gross Photosynthesis ◽  
Total Percentage ◽  
Carbon Translocation ◽  
Tropical Coral

Abstract. This study has examined the effect of an increased seawater pCO2 on the rates of photosynthesis and carbon translocation in the scleractinian coral species Stylophora pistillata using a new model based on 13C-labelling of the photosynthetic products. Symbiont photosynthesis contributes for a large part of the carbon acquisition in tropical coral species and is therefore an important process that may determine their survival under climate change scenarios. Nubbins of S. pistillata were maintained for six months under two pHs (8.1 and 7.2). Rates of photosynthesis and respiration of the symbiotic association and of isolated symbionts were assessed at each pH. The fate of 13C-photosynthates was then followed in the symbionts and the coral host for 48 h. Nubbins maintained at pH 7.2 presented a lower areal symbiont concentration, lower areal rates of gross photosynthesis, and lower carbon incorporation rates compared to nubbins maintained at pH 8.1, therefore suggesting that the total carbon acquisition was lower in this first set of nubbins. However, the total percentage of carbon translocated to the host, as well as the amount of carbon translocated per symbiont cell was significantly higher under pH 7.2 than under pH 8.1 (70% at pH 7.2 versus 60% at pH 8.1), so that the total amount of photosynthetic carbon received by the coral host was equivalent under both pHs (5.5 to 6.1 μg C cm−2 h−1). Although the carbon budget of the host was unchanged, symbionts acquired less carbon for their own needs (0.6 against 1.8 μg C cm−2 h−1), explaining the overall decrease in symbiont concentration at low pH. In the long-term, this decrease might have important consequences for the survival of corals under an acidification stress.

Determination of the viability of retinispora (Hinoki cypress) seeds using shortwave infrared hyperspectral imaging spectroscopy

2020 ◽  
Vol 28 (2) ◽  
pp. 70-80 ◽  
Author(s):  
Perez Mukasa ◽  
Collins Wakholi ◽  
Akbar Faqeerzada Mohammad ◽  
Eunsoo Park ◽  
Jayoung Lee ◽  
...  
Keyword(s):  
Discriminant Analysis ◽  
Hyperspectral Imaging ◽  
Imaging Spectroscopy ◽  
Partial Least Square ◽  
Least Square ◽  
Successive Projections Algorithm ◽  
Hinoki Cypress ◽  
Sorting System ◽  
Shortwave Infrared ◽  
Successive Projections

The combination of hyperspectral imaging with multivariate data analysis methods has recently been applied to develop a nondestructive technique, required to determine the seed viability of artificially aged vegetable and cereal seeds. In this study, the potential of shortwave infrared hyperspectral imaging to determine the viability of naturally aged seeds was investigated and thereafter a model for online seed sorting system was developed. The hyperspectral images of 400 Hinoki cypress tree seeds were acquired, and germination tests were conducted for viability confirmation, which indicated 31.5% of the viable seeds. Partial least square discriminant analysis models with 179 variables in the wavelength region of 1000–1800 nm were developed with a maximum model accuracy of 98.4% and 93.8% in both the calibration and validation sets, respectively. The partial least square discriminant analysis beta coefficient revealed the key wavelengths to differentiate viable from nonviable seeds, determined based on the differences in the chemical compositions of the seeds, including their lipid and fatty acid contents, which may control the germination ability of the seeds. The most effective wavelengths were selected using two model-based variable selection methods (i.e., the variable importance of projection (15 variables) and the successive projections algorithm (8 variables)) to develop the model. The successive projections algorithm wavelength selection method was considered to develop a viability model, and its application to the raw data resulted in a prediction accuracy of 94.7% in the calibration set and 92.2% in the validation set. These results demonstrate the potential of shortwave infrared hyperspectral imaging spectroscopy as a powerful nondestructive method to determine the viability of Hinoki cypress seeds. This method could be applied to develop an online seed sorting system for seed companies and nurseries.

NITROGEN AND CARBON TRANSLOCATION AND DISTRIBUTION IN CURCUMA ALISMATIFOLIA GAGNEP. BY LABELLING EXPERIMENT WITH 15N AND 13C

2011 ◽  
pp. 131-138
Author(s):  
T. Khuankaew ◽  
S. Ito ◽  
N. Ohtake ◽  
K. Sueyoshi ◽  
T. Ohyama ◽  
...  
Keyword(s):  
Carbon Translocation ◽  
Labelling Experiment

Determination of viability of Retinispora (Hinoki cypress) seeds using FT-NIR spectroscopy

2019 ◽  
Vol 98 ◽  
pp. 62-68 ◽  
Author(s):  
Perez Mukasa ◽  
Collins Wakholi ◽  
Changyeun Mo ◽  
Mirae Oh ◽  
Hye-Joon Joo ◽  
...  
Keyword(s):  
Nir Spectroscopy ◽  
Hinoki Cypress

scholarly journals Carbon translocation from a plant to an insect-pathogenic endophytic fungus

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Scott W. Behie ◽  
Camila C. Moreira ◽  
Irina Sementchoukova ◽  
Larissa Barelli ◽  
Paul M. Zelisko ◽  
...  
Keyword(s):  
Endophytic Fungus ◽  
Carbon Translocation
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