Linking stress with macroscopic and microscopic leaf response in trees: New diagnostic perspectives

Günthardt‐Goerg, Madeleine S.; Vollenweider, Pierre

doi:10.1016/j.envpol.2006.08.033

Cited by 152 publications

(134 citation statements)

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“…However in plants exposed at Ibirapuera Park, independently of the season, and those fumigated with O 3 , microscopic damage was observed as discrete groups of cells with remaining organelles and disrupted cell content. Th is kind of response was described by Günthardt-Goerg & Vollenweider (2007), as a HR-like and it is a type of programmed cell death (PCD) and represents a plant defense mechanism against biotic stress, which can also be induced by a few abiotic stress factors. Th e criteria to identify the HR-like response according to the same authors are the absence of pathogens, restriction of the PCD to a small group of cells, rupture of the cell contents, collapse of the cell walls, and incomplete degradation of the cell as a consequence of fast cell death.…”

Section: Discussionmentioning

confidence: 99%

“…Such reactions include the induction of polyphenols, pathogenesis related proteins (PR1), cell wall modifi cations and localized cell collapse and death, which are indicative of programmed cell death (PCD) described as hypersensitive response (HR), which occurs in a discrete groups of cells (Niderman et al 1995). Th is kind of response can be recognized by structural changes indicated by microscopic analysis in which the stress response can be seen before any visible damage (Günthardt-Goerg & Vollenweider 2007).…”

Section: Introductionmentioning

confidence: 99%

“…It enters the leaf through stomata and immediately decays into diff erent reactive oxygen species (ROS), leading to an oxidative burst which might be related to the formation of lesion points as observed in sensitive species (Günthardt-Goerg & Vollenweider 2007). Also, ROS might accumulate in the subcellular compartments of palisade cells, reacting with the lipid membranes towards the initial oxidative stress, damaging proteins and leading to a physiological defi ciency (Schraudner et al 1997).…”

Section: Introductionmentioning

confidence: 99%

“…Finally, ROS cause a fast and localized cell death, characterized by cell collapse, an incomplete degradation of the cellular components and a subtle loss of membrane integrity (Günthardt-Goerg et al 1997). According to Günthardt-Goerg & Vollenweider (2007) such eff ects not only have come out by ozone stress but preferably by pathogen-induced response. So, the induction of plant defense reactions triggered by ozone stress is similar to those induced by pathogens (Rao et al 2000;Sandermann et al 1998).…”

Section: Introductionmentioning

confidence: 99%

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Structural responses of Ipomoea nil (L.) Roth 'Scarlet O'Hara' (Convolvulaceae) exposed to ozone

2011

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) is an important photochemical pollutant due to its high reactivity and phytotoxicity. Plants can show microscopic damage caused by this gas before the detection of visible symptoms. Th e present study aimed to improve our knowledge concerning the eff ects of O 3 on Ipomoea nil L. cv. Scarlet O'Hara leaves. Plants were exposed at a pollutant site in São Paulo city, with high levels of O 3, and fumigation with O 3 was also carried out. In plants exposed to the environment, without visible symptoms, hypersensitive response-like (HR-like) and protrusions in the cell walls was observed, indicating oxidative processes; in leaves with visible symptoms, there is epidermis breakdown and the palisade and spongy parenchyma collapse. Fumigation confi rmed that microscopic damage occurring in the plants exposed to the environment was linked to the symptoms caused by O 3 . Th ese results demonstrate that Ipomoea nil responds to stress induced by O 3 with specifi c structural changes that precede visible symptoms.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural responses of Ipomoea nil (L.) Roth 'Scarlet O'Hara' (Convolvulaceae) exposed to ozone

2011

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“…Günthardt-Goerg and Vollenweider (2007), studying issues related to heavy metals in the environment, indicated the tendency of metal accumulation in older leaves, with a preference for lower leaf tissues. The metals are observed within the chloroplast or the vacuole and are able to accelerate cellular senescence via nuclei condensation, reducing the size of the chloroplasts and necrotizing the inferior epidermis of Populus tremula L.…”

Section: Histoanatomical Observationsmentioning

confidence: 99%

The biochemical and histoanatomical response of some woodyspecies to anthropic impact in Suceava County, Romania

Ciornea¹,

Boz²,

Ionel³

et al. 2015

Turk J Biol

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+ OH -) reactions, generating ROS. Other metals with redox capacity (cadmium -Cd, zinc -Zn, and mercury -Hg) are able to cause metabolic imbalances, destroying the antioxidant potential of the cell through the inhibition of oxidative stress enzymes and increasing the production of oxygen radicals (Keunen et al., 2011).Anthropogenic S mining activity carried out in the Călimani Mountains resulted in extremely low maintenance of soil pH due to the presence of S and its oxidation reactions (sulfates over the limit of intervention). These reactions have a direct impact on transforming toxic metals from the environment in mobile ions, absorbed by vegetation from the soil. Excess Fe, Mn, Cu, Zn, Cd, and Ni have been found in previous studies, but below the level of alert (Diţoiu and Oşean, 2007).As shown by some scientific data, emanations, liquids, solids, and gases, and especially complex polymetallic sulfides (

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Heavy metals and arsenic phytoavailability index in pioneer plants from a semipermanent natural wetland

Gómez-Bernal

Ruíz-Huerta

Armienta

et al. 2017

Env Prog and Sustain Energy

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The total concentration of Pb, Zn, Cu, Fe, Mn, and As in mining‐impacted soils and pioneer plants from a semi‐permanent natural wetland was determined by X‐ray fluorescence. Results showed that the maximum values in soil were Fe > Zn > Pb > Mn > As > Cu and in plants were Zn > Pb > As > Cu, and Mn and Fe were found in variable concentrations. Bouteloa repens showed the highest translocation factor (TF) for all heavy metals, and the highest phytoavailability index (PI) for Fe, Cu, As, and Mn. However, Typha dominguensis was the plant species with the most elevated bioconcentration factor (BCF) for Mn and Fe and PI for Pb and Zn, while Cyperus manimae showed the maximum BCF for As, Pb, and Cu, and the highest PI for Mn. For Eleocharis ovata the maximum BCF and PI were for Zn and As, respectively. The PI indicates the availability of heavy metals and As in the environment and their bioaccumulation in plants. The plant species reported in this study are pioneer plants that can easily become established due to their environmental resilience and physiologic characteristics. This study shows that B. repens and T. dominguensis are species that translocate heavy metals and accumulate them in their various organs, and therefore, these plants are suggested as good candidates for phytostabilization in similar semi‐permanent natural wetlands. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 980–988, 2018

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Linking stress with macroscopic and microscopic leaf response in trees: New diagnostic perspectives

Cited by 152 publications

References 120 publications

Structural responses of Ipomoea nil (L.) Roth 'Scarlet O'Hara' (Convolvulaceae) exposed to ozone

Structural responses of Ipomoea nil (L.) Roth 'Scarlet O'Hara' (Convolvulaceae) exposed to ozone

The biochemical and histoanatomical response of some woodyspecies to anthropic impact in Suceava County, Romania

Heavy metals and arsenic phytoavailability index in pioneer plants from a semipermanent natural wetland

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