Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves

ABSTRACT Recently, there is a big interest in science to use seaweed extract in agricultural practice. Therefore, the aim of this paper was to determine the effect of foliar application of Ecklonia maxima extract on photosynthetic activity and chlorophyll content of Medicago ×varia Martyn leaves. Th...

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Autores principales:	Sosnowski,Jacek, Jankowski,Kazimierz, Truba,Milena, Malinowska,Elzbieta
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2019
Materias:	Chlorophyll fluorescence Ecklonia maxima marine algae extract photochemical quenching coefficient seaweed
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000200257
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spelling	oai:scielo:S0718-583920190002002572019-05-14Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leavesSosnowski,JacekJankowski,KazimierzTruba,MilenaMalinowska,Elzbieta Chlorophyll fluorescence Ecklonia maxima marine algae extract photochemical quenching coefficient seaweed ABSTRACT Recently, there is a big interest in science to use seaweed extract in agricultural practice. Therefore, the aim of this paper was to determine the effect of foliar application of Ecklonia maxima extract on photosynthetic activity and chlorophyll content of Medicago ×varia Martyn leaves. The experimental factor was a commercial product containing E. maxima extract (Em). The following parameters were determined: maximum photosystem II efficiency (Fv/Fm) in the dark-adapted state, actual photosystem II efficiency in the light-adapted state (∆F/Fm’), the photochemical quenching coefficient (qP), the non-photochemical quenching coefficient (qN), chlorophyll content determination. The Fisher-Snedecor test was used to determine whether the impact of experimental factor was significant, while the value of the HSD0.05 was calculated with Tukey’s test. As a reaction to the particular conditions during the experiment alfalfa treated with Em had a better efficiency of the photosynthetic apparatus in relation to the control. Algae extract used on hybrid alfalfa leaves caused a 12.4% increase of Fv/Fm parameter, from 0.565 on the control to 0.635. The value of the actual efficiency of photosystem II (∆F/Fm) determined under the same conditions turned out to be about 20% higher for plants treated with the extract. Chlorophyll a and b concentration, as a response to the extract, increased by 12% and 16.7%, respectively. The experiment showed that periods of rainfall shortages did not reverse the effect of the extract on plants, with an increase in chlorophyll a and b content during the growing seasons with dry and extremely dry months.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.79 n.2 20192019-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000200257en10.4067/S0718-58392019000200257
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chlorophyll fluorescence Ecklonia maxima marine algae extract photochemical quenching coefficient seaweed
spellingShingle	Chlorophyll fluorescence Ecklonia maxima marine algae extract photochemical quenching coefficient seaweed Sosnowski,Jacek Jankowski,Kazimierz Truba,Milena Malinowska,Elzbieta Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves
description	ABSTRACT Recently, there is a big interest in science to use seaweed extract in agricultural practice. Therefore, the aim of this paper was to determine the effect of foliar application of Ecklonia maxima extract on photosynthetic activity and chlorophyll content of Medicago ×varia Martyn leaves. The experimental factor was a commercial product containing E. maxima extract (Em). The following parameters were determined: maximum photosystem II efficiency (Fv/Fm) in the dark-adapted state, actual photosystem II efficiency in the light-adapted state (∆F/Fm’), the photochemical quenching coefficient (qP), the non-photochemical quenching coefficient (qN), chlorophyll content determination. The Fisher-Snedecor test was used to determine whether the impact of experimental factor was significant, while the value of the HSD0.05 was calculated with Tukey’s test. As a reaction to the particular conditions during the experiment alfalfa treated with Em had a better efficiency of the photosynthetic apparatus in relation to the control. Algae extract used on hybrid alfalfa leaves caused a 12.4% increase of Fv/Fm parameter, from 0.565 on the control to 0.635. The value of the actual efficiency of photosystem II (∆F/Fm) determined under the same conditions turned out to be about 20% higher for plants treated with the extract. Chlorophyll a and b concentration, as a response to the extract, increased by 12% and 16.7%, respectively. The experiment showed that periods of rainfall shortages did not reverse the effect of the extract on plants, with an increase in chlorophyll a and b content during the growing seasons with dry and extremely dry months.
author	Sosnowski,Jacek Jankowski,Kazimierz Truba,Milena Malinowska,Elzbieta
author_facet	Sosnowski,Jacek Jankowski,Kazimierz Truba,Milena Malinowska,Elzbieta
author_sort	Sosnowski,Jacek
title	Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves
title_short	Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves
title_full	Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves
title_fullStr	Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves
title_full_unstemmed	Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves
title_sort	effect of ecklonia maxima extract on photosynthesis activity and chlorophyll content of medicago × varia martyn leaves
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000200257
work_keys_str_mv	AT sosnowskijacek effectofeckloniamaximaextractonphotosynthesisactivityandchlorophyllcontentofmedicagovariamartynleaves AT jankowskikazimierz effectofeckloniamaximaextractonphotosynthesisactivityandchlorophyllcontentofmedicagovariamartynleaves AT trubamilena effectofeckloniamaximaextractonphotosynthesisactivityandchlorophyllcontentofmedicagovariamartynleaves AT malinowskaelzbieta effectofeckloniamaximaextractonphotosynthesisactivityandchlorophyllcontentofmedicagovariamartynleaves
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Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves

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