The functional role of the photosynthetic apparatus in the recovery of Brassica ofBrassica napus plants from pre-emergent metazachlor exposure

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The functional role of the photosynthetic apparatus in the recovery of Brassica ofBrassica napus plants from pre-emergent metazachlor exposure. / Vercampt, Hanne; Koleva, L; Vassilev, A; Horemans, Nele; Biermans, Geert; Vangronsveld, Jaco; Cuypers, Ann.

In: Journal of Plant Physiology, Vol. 196, 01.04.2016, p. 99.

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Vercampt, Hanne ; Koleva, L ; Vassilev, A ; Horemans, Nele ; Biermans, Geert ; Vangronsveld, Jaco ; Cuypers, Ann. / The functional role of the photosynthetic apparatus in the recovery of Brassica ofBrassica napus plants from pre-emergent metazachlor exposure. In: Journal of Plant Physiology. 2016 ; Vol. 196. pp. 99.

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@article{218fda33558b49ffb58e84293b6385bd,
title = "The functional role of the photosynthetic apparatus in the recovery of Brassica ofBrassica napus plants from pre-emergent metazachlor exposure",
abstract = "Metazachlor is a chloroacetamide herbicide, frequently used in Brassica napus cultivations around theworld. Its primary target is the inhibition of very long chain fatty acid biosynthesis. This study included amorphological and physiological screening of hydroponically grown B. napus, exposed to a concentrationrange of 0, 0.25, 0.50, 0.75 and 1.0 kg metazachlor per hectare. The results indicate that within a monthafter application, growth and development of B. napus are severely affected by low metazachlor doses.At intermediate metazachlor concentrations, loss of phosphorous and potassium from the plant tissuessuggests destabilisation of cellular membranes, which may be a direct consequence of metazachlor appli-cation. This membrane instability could be indirectly linked with alterations of electron transport anda reduction of carbon assimilation. At increased metazachlor doses of 0.75 kg a.i. ha−1, pigment concen-trations are strongly reduced. However, chlorophyll fluorescence parameters seem to remain unaffectedat metazachlor doses up to 0.75 kg a.i. ha−1. At a metazachlor concentration of 1.0 kg a.i. ha−1, negativeeffects are observed on all tested parameters, resulting in limited survival. The results indicate photosyn-thesis is assured at intermediate metazachlor concentrations for the cost of growth and development. Itis clear that photosynthesis plays a key role in the survival strategy of young plants to overcome initiallyinduced chemical stress.",
keywords = "Brassica napus, photosynthesis, stress response, herbicides",
author = "Hanne Vercampt and L Koleva and A Vassilev and Nele Horemans and Geert Biermans and Jaco Vangronsveld and Ann Cuypers",
note = "Score=10",
year = "2016",
month = "4",
day = "1",
doi = "10.1016/j.jplph.2016.04.001",
language = "English",
volume = "196",
pages = "99",
journal = "Journal of Plant Physiology",
issn = "0176-1617",
publisher = "Elsevier",

}

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TY - JOUR

T1 - The functional role of the photosynthetic apparatus in the recovery of Brassica ofBrassica napus plants from pre-emergent metazachlor exposure

AU - Vercampt, Hanne

AU - Koleva, L

AU - Vassilev, A

AU - Horemans, Nele

AU - Biermans, Geert

AU - Vangronsveld, Jaco

AU - Cuypers, Ann

N1 - Score=10

PY - 2016/4/1

Y1 - 2016/4/1

N2 - Metazachlor is a chloroacetamide herbicide, frequently used in Brassica napus cultivations around theworld. Its primary target is the inhibition of very long chain fatty acid biosynthesis. This study included amorphological and physiological screening of hydroponically grown B. napus, exposed to a concentrationrange of 0, 0.25, 0.50, 0.75 and 1.0 kg metazachlor per hectare. The results indicate that within a monthafter application, growth and development of B. napus are severely affected by low metazachlor doses.At intermediate metazachlor concentrations, loss of phosphorous and potassium from the plant tissuessuggests destabilisation of cellular membranes, which may be a direct consequence of metazachlor appli-cation. This membrane instability could be indirectly linked with alterations of electron transport anda reduction of carbon assimilation. At increased metazachlor doses of 0.75 kg a.i. ha−1, pigment concen-trations are strongly reduced. However, chlorophyll fluorescence parameters seem to remain unaffectedat metazachlor doses up to 0.75 kg a.i. ha−1. At a metazachlor concentration of 1.0 kg a.i. ha−1, negativeeffects are observed on all tested parameters, resulting in limited survival. The results indicate photosyn-thesis is assured at intermediate metazachlor concentrations for the cost of growth and development. Itis clear that photosynthesis plays a key role in the survival strategy of young plants to overcome initiallyinduced chemical stress.

AB - Metazachlor is a chloroacetamide herbicide, frequently used in Brassica napus cultivations around theworld. Its primary target is the inhibition of very long chain fatty acid biosynthesis. This study included amorphological and physiological screening of hydroponically grown B. napus, exposed to a concentrationrange of 0, 0.25, 0.50, 0.75 and 1.0 kg metazachlor per hectare. The results indicate that within a monthafter application, growth and development of B. napus are severely affected by low metazachlor doses.At intermediate metazachlor concentrations, loss of phosphorous and potassium from the plant tissuessuggests destabilisation of cellular membranes, which may be a direct consequence of metazachlor appli-cation. This membrane instability could be indirectly linked with alterations of electron transport anda reduction of carbon assimilation. At increased metazachlor doses of 0.75 kg a.i. ha−1, pigment concen-trations are strongly reduced. However, chlorophyll fluorescence parameters seem to remain unaffectedat metazachlor doses up to 0.75 kg a.i. ha−1. At a metazachlor concentration of 1.0 kg a.i. ha−1, negativeeffects are observed on all tested parameters, resulting in limited survival. The results indicate photosyn-thesis is assured at intermediate metazachlor concentrations for the cost of growth and development. Itis clear that photosynthesis plays a key role in the survival strategy of young plants to overcome initiallyinduced chemical stress.

KW - Brassica napus

KW - photosynthesis

KW - stress response

KW - herbicides

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/21969826

U2 - 10.1016/j.jplph.2016.04.001

DO - 10.1016/j.jplph.2016.04.001

M3 - Article

VL - 196

SP - 99

JO - Journal of Plant Physiology

JF - Journal of Plant Physiology

SN - 0176-1617

ER -

ID: 2148523