Alterations induced by glyphosate on lupin photosynthetic apparatus and nodule ultrastructure and some oxygen diffusion related proteins

María, Nuria de; Felipe, Ma Rosario de; Fernández‐Pascual, Mercedes

doi:10.1016/j.plaphy.2005.09.001

Cited by 40 publications

(40 citation statements)

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“…3). Similar results have been reported for white lupin plants grown with Cd (Carpena et al, 2003) and in the presence of high levels of glyphosate (de María et al, 2005). The rupture of the peribacteroidal membrane can affect nodular functioning since solute transport between the cytosol and bacteroid takes place through this membrane (de María et al, 2007).…”

Section: Discussionsupporting

confidence: 78%

“…An increase in glycoproteins in the nodule intercellular spaces would limit the diffusion of O 2 to infected zone, as described in Cdtreated white lupin nodules (Carpena et al, 2003). The opposite effect was observed in the presence of glyphosate (de María et al, 2005). The reduction in O 2 concentration in the the infected zone reduces nitrogenase activity, leading to reductions in N 2 fixation, the protein content and the quantity of nitrogenated compounds exported from the nodule (Guasch et al, 2001).…”

Section: Discussionmentioning

confidence: 95%

“…Moreover, the integrity of the bacteroid membranes plays an important role in the maintenance of turgor in the non-vacuolated infected cells in white lupin nodules. The rupture or disintegration of these membranes would cause an alteration in osmotic pressure within these cells (de María et al, 2005). In soybean nodules, the excess Cu caused a degeneration of the bacteroidal membrane but the peribacteroidal membrane remained intact (Fig.…”

Section: Discussionmentioning

confidence: 99%

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Copper microlocalisation, ultrastructural alterations and antioxidant responses in the nodules of white lupin and soybean plants grown under conditions of copper excess

Sánchez-Pardo

Fernández‐Pascual

Zornoza

2012

Environmental and Experimental Botany

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Esta es la versión de autor del artículo publicado en:This is an author produced version of a paper published in: sensitive to Cu excess than those of soybean, with the nodulation process, N 2 fixation, and the ultrastructure of bacteroids more strongly affected. A less effective antioxidative stress response against Cu was also seen in white lupin than in soybean nodules: the excess copper treatment induced a smaller increase in the total thiol content and ascorbate peroxidase activity in white lupin nodules than in soybean nodules, and promoted a greater reduction in catalase activity.

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

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Copper microlocalisation, ultrastructural alterations and antioxidant responses in the nodules of white lupin and soybean plants grown under conditions of copper excess

Sánchez-Pardo

Fernández‐Pascual

Zornoza

2012

Environmental and Experimental Botany

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“…Long filamentous and branched structures were also observed in infected cells; however, it was not possible by visual inspection to determine whether these structures were hyphae or pleomorphic bacteriods which, in many cases, enlarge up to seven times from their original bacterial rod-shape size (Oke and Long, 1999;de Maria et al, 2005). Future studies are needed to determine how Micromonospora relates to Bradyrhizobium in a tripartite interaction; a synergistic effect of both bacteria on the plant is possible (Tokala et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

The genus Micromonospora is widespread in legume root nodules: the example of Lupinus angustifolius

et al. 2010

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Our current knowledge of plant-microbe interactions indicate that populations inhabiting a host plant are not restricted to a single microbial species but comprise several genera and species. No one knows if communities inside plants interact, and it has been speculated that beneficial effects are the result of their combined activities. During an ecological study of nitrogen-fixing bacterial communities from Lupinus angustifolius collected in Spain, significant numbers of orangepigmented actinomycete colonies were isolated from surface-sterilized root nodules. The isolates were analysed by BOX-PCR fingerprinting revealing an unexpectedly high genetic variation. Selected strains were chosen for 16S rRNA gene sequencing and phylogenetic analyses confirmed that all strains isolated belonged to the genus Micromonospora and that some of them may represent new species. To determine the possibility that the isolates fixed atmospheric nitrogen, chosen strains were grown in nitrogen-free media, obtaining in some cases, significant growth when compared with the controls. These strains were further screened for the presence of the nifH gene encoding dinitrogenase reductase, a key enzyme in nitrogen fixation. The partial nifH-like gene sequences obtained showed a 99% similarity with the sequence of the nifH gene from Frankia alni ACN14a, an actinobacterium that induces nodulation and fixes nitrogen in symbiosis with Alnus. In addition, in situ hybridization was performed to determine if these microorganisms inhabit the inside of the nodules. This study strongly suggests that Micromonospora populations are natural inhabitants of nitrogen-fixing root nodules.

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“…There are many indirect effects of glyphosate, such as decreased levels of the activity of the enzyme ribulose-1,5-biphosphate carboxylase/oxygenase (Rubisco) (Ahsan et al, 2008) and disorganization of the photosynthetic apparatus (María et al, 2005). Other general consequences of the exposure to glyphosate are chlorosis and plant growth reduction, mainly in metabolically active tissues, such as immature leaves, sprouts, floral buds, and root tips (Duke, 1988;Duke et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Plant Growth Responses of Apple and Pear Trees to Doses of Glyphosate

et al. 2016

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-Glyphosate is commonly used for intra-row weed management in perennial plantations, where unintended crop exposure to this herbicide can cause growth reduction. The objective of this research was to analyze the initial plant growth behavior of young apple and pear plants exposed to glyphosate. Glyphosate was sprayed on 2-year-old 'Gala' apple and 'Abbè Fetel' pear plants at doses from 18 to 720 g per hectare of acid equivalent (a.e.). The plant height of neither species was not significantly reduced (less than 1%) by any glyphosate dose at 240 days after spraying, whereas the stem diameter and the dry mass of stem and leaves were reduced by 720 g a.e. ha -1 . The glyphosate dose required to reduce the aboveground dry mass by 50% was 162 and 148 g a.e. ha -1 for apple and pear, respectively. Aboveground dry mass was reduced 2% and 6% for apple and pear plants, respectively, at 720 g a.e. ha -1 . Hormesis was not observed in either species at doses down to 18 g a.e. ha -1 . Both species showed low susceptibility to glyphosate; however apple was less susceptible than pear. Keywords: N-phosphonomethyl-glycine, Malus domestica, Pyrus communis, spray drift. RESUMO -Glyphosate é comumente usado para manejo de plantas daninhas na linha de plantio de culturas perenes, onde a exposição não intencional da cultura a esse herbicida pode causar redução do crescimento. O objetivo desta pesquisa foi analisar o comportamento do crescimento inicial de

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Alterations induced by glyphosate on lupin photosynthetic apparatus and nodule ultrastructure and some oxygen diffusion related proteins

Cited by 40 publications

References 32 publications

Copper microlocalisation, ultrastructural alterations and antioxidant responses in the nodules of white lupin and soybean plants grown under conditions of copper excess

Copper microlocalisation, ultrastructural alterations and antioxidant responses in the nodules of white lupin and soybean plants grown under conditions of copper excess

The genus Micromonospora is widespread in legume root nodules: the example of Lupinus angustifolius

Plant Growth Responses of Apple and Pear Trees to Doses of Glyphosate

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