Yield responses of plants exposed to ambient ozone 
in the river Po Valley (Italy)

Fumagalli, I.; Ambrogi, R.; Mignanego, L.

doi:10.1051/agro:2001101

Cited by 10 publications

(3 citation statements)

References 10 publications

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“…Also air pollutants penetrate into the plant tissues through the stomata. Special attention is given to ozone, which causes harmful effects and crop yield losses (see e.g., De Temmerman, Vandermeiren, & Guns, 1992;Fuhrer & Achermann, 1999;Fumagalli, Ambrogi, & Mignanego, 2001); in some cases, visible damage is observed, especially in onion (Engle, Gabelman, & Romanowski, 1965;Rist & Lorbeer, 1983).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Different Algorithms for Stomatal Ozone Flux Determination from Micrometeorological Measurements

Gerosa

Derghi

Cieslik

2006

Water Air Soil Pollut

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The determination of stomatal ozone fluxes is essential to assess the potential damage to plants due to ozone uptake. This parameter is not accessible directly with measurements, but can be deduced through algorithms using observational data. Total ozone fluxes and water vapour fluxes are generally used. Water vapour fluxes give an indication on stomatal aperture, which is the controlling factor of ozone uptake by vegetation. In this work, a series of observations made during the growing season over an onion field are used to show the equivalence of two algorithms found in the literature to derive ozone stomatal fluxes and both based on the similarity between ozone stomatal fluxes and water vapour stomatal fluxes. One of these algorithms uses the Penman-Monteith approach, where the water vapour pressure deficit is calculated using air temperatures; the second calculates, with another formulation, the water vapour deficit from the leaf temperature. The two approaches lead to the same results if applied properly, as shown in this work, both theoretically and numerically.

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Section: Introductionmentioning

confidence: 99%

Comparison of Different Algorithms for Stomatal Ozone Flux Determination from Micrometeorological Measurements

Gerosa

Derghi

Cieslik

2006

Water Air Soil Pollut

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“…Ozone injuries to vegetation are known since long time (Heggestad and Heck, 1971) and also in Italy yield losses are well known in many crops (Postiglione and Fagnano, 1993;Postiglione et al, 2000;Fumagalli et al, 2001). Nevertheless, these trials were made without water limitation, while the typical environmental conditions of the Mediterranean area are characterized by summer water deficit.…”

Section: Introductionmentioning

confidence: 99%

Ozone and Water Stress: Effects on the Behaviour of Two White Clover Biotypes

Fagnano

Merola²

2007

Ital J Agronomy

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<span style="color: #231f20; font-family: Times; font-size: 9px;">ozone pollution, water stress, stomata conductance, ozone uptake, clover, OTC.</span>Ozone is a strong oxidizing pollutant which derives by alteration of the photolytic NOx cycle and it accumulates in the troposphere spreading in rural areas and therefore determining injuries on natural vegetation and crops. Since its penetration occurs mainly through stomata, all factors which alter plant-atmosphere relations could be able to modify plant response to ozone. Interaction between ozone and water stress in Mediterranean environment was studied on ozone resistant and sensitive biotypes of white clover, which were grown in charcoal filtered and notfiltered Open Top Chambers in factorial combination with different levels of water supply. Measurements of biomass, leaf area and stomatal conductance were made during the growth period. Ozone injuries were estimated as not-filtered/filtered OTC yield ratio; the stomatal flux of ozone was estimated multiplying stomata conductance x diffusivity ratio between ozone and water vapour (0.613) x ozone hourly concentrations. The hourly values of ozone uptake were cumulated throughout the cropping periods of the two years. In the sensitive biotype, water stress reduced yield losses due to ozone from 38% to 22%, as well as yield losses due to water stress were reduced by the presence of ozone from 43% to 29%, while no interaction between ozone and water stress was observed in the resistant biotype. Biomass yield losses of the sensitive biotype were strictly correlated to cumulated ozone uptake (R2 = 0.99), while biomass yield losses of the resistant biotype were not affected by the ozone fluxes variations created by the treatments. Flux based models could better estimate yield losses due to ozone in Mediterranean environments in which other stresses could be contemporary present; therefore, the new European directives might replace the actual thresholds based on ozone concentration with others based on ozone flux models

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“…Παρόμοια αποτελέσματα βρέθηκαν για το βαμβάκι (Reddy et al, 1989). Παρακάτω αναφέρεται μείωση της απόδοσης λόγω αυξημένων ποσοτήτων όζοντος στο σιτάρι, στα φασόλια, στα κολοκύθια και στη σόγια (Fumagalli et al, 2001), στο ρύζι στο σιτάρι στον αραβόσιτο και στη σόγια (Long et al, 2005) και επίσης στη σόγια (Morgan et al, 2006).…”

Section: στα τμήματα των φύλλων προστίθενται διαδοχικά με πιπέτεςunclassified

Επίδραση των υπεριωδών ακτινοβολιών-Β και του όζοντος στα μορφολογικά ανατομικά φυσιολογικά και ποιοτικά γνωρίσματα του βαμβακιού (Gossypium hirsutum L.)

Ζούζουλας¹

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Επίδραση της UV-B ακτινοβολίας στα φυτά του βαμβακιού …. 1.2 Επίδραση του τροποσφαιρικού όζοντος στα φυτά του βαμβακιού ………………………………………………………………….. 2. ΕΙΣΑΓΩΓΗ …………………………………………………………..…. 2.1 Το βαμβάκι ………………………………………………………... 2.2 Γενικά για την UV-B ακτινοβολία ……………………………….. 2.3Επιδράσεις της UV-B ακτινοβολίας στα φυτά ……………….... 2.4Γενικά για το τροποσφαιρικό όζον…………………………….... 2.5Επιδράσεις του τροποσφαιρικού όζοντος στα φυτά ………….. ΥΛΙΚΑ ΚΑΙ ΜΕΘΟ∆ΟΙ ……………………………………………….. 3.1Θάλαμοι UV-B ακτινοβολίας και συνθήκες ανάπτυξης των φυτών στους θαλάμους αυτούς ……………………………………... 3.2Θάλαμοι όζοντος και συνθήκες ανάπτυξης των φυτών μέσα στους θαλάμους αυτούς ……….………………………………...... Πρωτόκολλο της βιολογικά ενεργής υπεριώδους ακτινοβολίας-B (UV-B BE ) ………………………………………………………...... 3.4Πρωτόκολλο του όζοντος …….…………………………….….... 3.5Μετρήσεις ορισμένων ποσοτικών και ποιοτικών χαρακτηριστικών του βαμβακιού ……………………………………………...... 3.6Στατιστική ανάλυση …………………………………………….... 4. ΑΠΟΤΕΛΕΣΜΑΤΑ ……………………………………………….…... 4.1 Επίδραση της υπεριώδους ακτινοβολίας-Β στα φυτά του βαμβακιού ………………………………………………………...….....4.2 Επίδραση του τροποσφαιρικού όζοντος στα φυτά του βαμβα-από 3-5 καρπόφυλλα (εικ. 10) και σχηματίζει 3-5 χώρους. Σε κάθε χώρο της ωοθήκης περιέχονται 5-11 σπερμοβλάστες (Smith και

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Yield responses of plants exposed to ambient ozone in the river Po Valley (Italy)

Cited by 10 publications

References 10 publications

Comparison of Different Algorithms for Stomatal Ozone Flux Determination from Micrometeorological Measurements

Comparison of Different Algorithms for Stomatal Ozone Flux Determination from Micrometeorological Measurements

Ozone and Water Stress: Effects on the Behaviour of Two White Clover Biotypes

Επίδραση των υπεριωδών ακτινοβολιών-Β και του όζοντος στα μορφολογικά ανατομικά φυσιολογικά και ποιοτικά γνωρίσματα του βαμβακιού (Gossypium hirsutum L.)

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