Environmental photochemistry on plants: recent advances and new opportunities for interdisciplinary research

Sleiman, Mohamad; Nienow, Amanda M.; Richard, Claire

doi:10.1007/s43630-022-00228-w

Cited by 7 publications

(14 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To the best of our knowledge, leafsurface photodegradation of pesticides is the only process that has been investigated in detail (reviewed by Sleiman et al 275 and others 29,264 )�although primarily in laboratory settings using model surfaces or reconstructed cuticles. 29,275,276 Some work has also been performed on the photodegradation of PAHs and their oxidation products on and within leaf cuticles, 277−279 while other studies investigated HNO 3 /nitrate photolysis on leaves of various plants. 280,281 On the contrary, the reactivity of anthropogenic SVOCs adsorbed on leaves with other gasphase oxidants has received considerably less attention.…”

Section: Observed Leaf-surface Reactivity Of Anthropogenic Svocsmentioning

confidence: 99%

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere

Ossola,

Farmer

2024

Chem. Rev.

View full text Add to dashboard Cite

Atmospheric chemists have historically treated leaves as inert surfaces that merely emit volatile hydrocarbons. However, a growing body of evidence suggests that leaves are ubiquitous substrates for multiphase reactions−implying the presence of chemicals on their surfaces. This Review provides an overview of the chemistry and reactivity of the leaf surface's "chemical landscape", the dynamic ensemble of compounds covering plant leaves. We classified chemicals as endogenous (originating from the plant and its biome) or exogenous (delivered from the environment), highlighting the biological, geographical, and meteorological factors driving their contributions. Based on available data, we predicted ≫2 μg cm −2 of organics on a typical leaf, leading to a global estimate of ≫3 Tg for multiphase reactions. Our work also highlighted three major knowledge gaps: (i) the overlooked role of ambient water in enabling the leaching of endogenous substances and mediating aqueous chemistry; (ii) the importance of phyllosphere biofilms in shaping leaf surface chemistry and reactivity; (iii) the paucity of studies on the multiphase reactivity of atmospheric oxidants with leaf-adsorbed chemicals. Although biased toward available data, we hope this Review will spark a renewed interest in the leaf surface's chemical landscape and encourage multidisciplinary collaborations to move the field forward. CONTENTS

show abstract

Section: Observed Leaf-surface Reactivity Of Anthropogenic Svocsmentioning

confidence: 99%

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere

Ossola,

Farmer

2024

Chem. Rev.

View full text Add to dashboard Cite

show abstract

“…Photophysical processes are of broad interest in many areas of chemistry, physics, and biological sciences. The vast applications encompass environmental science, , material science, photocatalytic processes, − solar cells, − photodynamic therapy, − and others . Therefore, understanding the photophysical properties that govern the excited state dynamics of such systems is of fundamental interest.…”

Section: Introductionmentioning

confidence: 99%

Calculation of Excited State Internal Conversion Rate Constant Using the One-Effective Mode Marcus-Jortner-Levich Theory

Bozzi

Rocha

2023

J. Chem. Theory Comput.

View full text Add to dashboard Cite

In this article, the one-effective mode Marcus-Jortner-Levich (MJL) theory and the classical Marcus theory for electron transfer were applied to estimate the internal conversion rate constant, k IC , of organic molecules and a Rubased complex, all belonging to the Marcus inverted region. For this, the reorganization energy was calculated using the minimum energy conical intersection point to account for more vibrational levels, correcting the density of states. The results showed good agreement with experimental and theoretically determined k IC , with a small overestimation by the Marcus theory. Also, molecules less dependent on the solvent effects, like benzophenone, presented better results than molecules with an expressive dependence, like 1-aminonaphthalene. Moreover, the results suggest that each molecule possesses unique normal modes leading to the excited state deactivation that does not necessarily match the X-H bond stretching, as previously suggested.

show abstract

“…As Sleiman et al . have noted, ‘photochemistry on plant surfaces has specificities compared to photochemistry in solution and on non‐living environmental surfaces’ 3 . Glass is an impermeable, clean and uniform substrate, and its polarity and morphology differ from those of real leaves.…”

Section: Introductionmentioning

confidence: 99%

“…For many agrochemicals, in particular those applied post-emergence, exposure to sunlight results in the potential for significant loss of material via photodegradation. [1][2][3] In an experiment performed in real field conditions, 4 photochemical reaction products of the herbicide sulcotrione were observed 1 h after the compound had been sprayed on a field of maize; after 1 day, the same photochemical product had reached 23% of the initial sulcotrione concentration. Pyrethroid insecticides are also well known for their susceptibility to photodegradation.…”

Section: Introductionmentioning

confidence: 99%

“…As Sleiman et al have noted, 'photochemistry on plant surfaces has specificities compared to photochemistry in solution and on non-living environmental surfaces'. 3 Glass is an impermeable, clean and uniform substrate, and its polarity and morphology differ from those of real leaves. It does not contain any of the chemical substances that are present in [17][18][19][20][21] or released by 22 plants and that are able to either promote or inhibit photochemical reactions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Measuring the photostability of agrochemicals on leaves: understanding the balance between loss processes and foliar uptake

Bronzato

Burriss

King

et al. 2023

Pest Management Science

View full text Add to dashboard Cite

BACKGROUND Photostability is an important property in agrochemicals, impacting their biological efficacy, environmental fate and registrability. As such, it is a property that is routinely measured during the development of new active ingredients and their formulations. To make these measurements, compounds are typically exposed to simulated sunlight after application to a glass substrate. While useful, these measurements neglect key factors that influence photostability under true field conditions. Most importantly, they neglect the fact that compounds are applied to living plant tissue, and that uptake and movement within this tissue provides a mechanism to protect compounds from photodegradation. RESULTS In this work, we introduce a new photostability assay incorporating leaf tissue as a substrate, designed to run at medium throughput under standardized laboratory conditions. Using three test cases, we demonstrate that our leaf‐disc‐based assays provides quantitatively different photochemical loss profiles to an assay employing a glass substrate. And we also demonstrate that these different loss profiles are intimately linked to the physical properties of the compounds, the effect that those properties have on foliar uptake and, thereby, the availability of the active ingredient on the leaf surface. CONCLUSIONS The method presented provides a quick and simple measure of the interplay between abiotic loss processes and foliar uptake, supplying additional information to facilitate the interpretation of biological efficacy data. The comparison of loss between glass slides and leaves also provides a better understanding of when intrinsic photodegradation is likely to be a good model for a compound's behaviour under field conditions. © 2023 Society of Chemical Industry.

show abstract

Environmental photochemistry on plants: recent advances and new opportunities for interdisciplinary research

Cited by 7 publications

References 83 publications

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere

The Chemical Landscape of Leaf Surfaces and Its Interaction with the Atmosphere

Calculation of Excited State Internal Conversion Rate Constant Using the One-Effective Mode Marcus-Jortner-Levich Theory

Measuring the photostability of agrochemicals on leaves: understanding the balance between loss processes and foliar uptake

Contact Info

Product

Resources

About