Reduction of evaporative flux in bean leaves due to chitosan treatment assessed by infrared thermography

Ludwig, Nicola; Cabrini, R; Faoro, Franco; Gargano, Marco; Gomarasca, Stefano; Picchi, Valentina; Soave, C.

doi:10.1016/j.infrared.2009.08.008

Cited by 12 publications

(3 citation statements)

References 15 publications

(23 reference statements)

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“…It was interesting to find that, in drought-treated seedlings, COS addition can lower the δ 13 C abundance; however, in well-watered seedlings, COS addition tended to elevate the δ 13 C abundance, especially in the second sampling. These findings resulted from the mechanism of foliage spraying COS to control stomatal conductance as an anti-transpirant [49,50]. When Buddhist pine seedlings suffered drought stress, the addition of COS induced the stomatal closure to control transpiration; in contrast, when seedlings were well watered, the addition of COS promoted the openness of stomata to promote exchange.…”

Section: Discussionmentioning

confidence: 99%

Chitosan Oligosaccharide Addition to Buddhist Pine (Podocarpus macrophyllus (Thunb) Sweet) under Drought: Reponses in Ecophysiology and δ13C Abundance

Zhao

Zhang

et al. 2020

Forests

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Climate warming induces the necessity to increase the drought resistance of shade-obligate juvenile trees in sub-tropical forests. Chitosan oligosaccharide (COS) is a biopolymer derived from the marine resource that has attracted accumulative attention to induce and promote a plant’s resistance to abiotic stress. Buddhist pine (Podocarpus mascrophyllus (Thunb)Sweet) seedlings were cultured as the model material whose natural distribution in sub-tropical areas of China has suffered severe summer drought events in the last 113 years. A split-block design was conducted with a simulated drought event (drought vs. irrigated control), the COS addition, and two samplings at the ends of drought and re-watered treatments. The COS addition increased the resistance to drought by inducing a starch allocation towards roots where δ13C abundance and antioxidant enzyme activities were upregulated. The COS addition can promote biomass allocation to roots and increase the number of new roots. The COS addition to drought-treated Buddhist pine seedlings resulted in robust diameter growth. Therefore, COS is an available polymer to promote the resistance of Buddhist pine to drought. More work is suggested to clarify the dose of COS addition that can induce a prominent response of biomass accumulation and carbohydrate metabolism.

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Section: Discussionmentioning

confidence: 99%

Chitosan Oligosaccharide Addition to Buddhist Pine (Podocarpus macrophyllus (Thunb) Sweet) under Drought: Reponses in Ecophysiology and δ13C Abundance

Zhao

Zhang

et al. 2020

Forests

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“…The evaporation of the water content in the leaves results as a lower temperature of the surfaces where evaporation occurs up to some decimal of grades, therefore it is detectable with the TIR. In case of too high temperature of the leaves (in comparison with the seasonal average), the data analysis will be and alert for a fast intervention (further inspections, watering, chemical analysis) (Ludwig et al 2009, Ludwig 2017, Milazzo et al 1994). Furthermore, TIR detects the temperature of the soil, thus helping to check the homogeneity of the water irrigation of the soil (because of the lowering temperature of soil due to the water evaporation after irrigation).…”

Section: Results Of Lamole Vineyard Surveymentioning

confidence: 99%

Aerial Platforms (Uav) Surveys in the Vis and Tir Range. Applications on Archaeology and Agriculture

Parisi

Suma

Korumaz³

et al. 2019

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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The paper presents multi-sensor applications of Unmanned Aerial Vehicles (UAVs) on three different cases of study, belonging to the wide category of Cultural Heritage (CH). The contribution aims to examine the efficacy of different methodological approach of surveys made in VIS and TIR range with aerial platforms. The use of UAV on two archaeological areas, Çatalhöyük site (Konya, Turkey) and the Medicean Villa of Pratolino (Florence, Italy) and an application of precision agriculture in Lamole (Greve in Chianti, Italy) will be presented. In particular, the analysis will focus on the accuracy of the obtained data, in terms of both metric and image quality, the possible information to extract from the IR imaging, the relationship between costs and benefits and the total amount of information that can be gained. The two different fields of research (archaeological and agricultural one) show that there are some similarities in the approaches and which could be the improving to obtain using the aerial survey in the visual and IR bands.

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“…The antitranspirants include phenylmercuric acetate (PMA) [15][16][17][18][19][20][21][22][23][24][25][26] , salicylic acid (SA) [4,6,8,15,[27][28][29] , abscisic acid (ABA) [3,5,9,15,16,[30][31][32][33][34][35][36][37][38][39][40] , kaolin [14,24,[41][42][43][44] , Vapor Gard [39,[45][46][47][48] and some others. The effect of an antitranspirant is influenced by its chemistry, soil moisture conditions and spraying period [6,9,10,12,…”

Section: Introductionmentioning

confidence: 99%

Effect of a new antitranspirant on the physiology and water use efficiency of soybean under different irrigation rates in an arid region

Ji¹,

Tong²,

Li³

et al. 2017

Front. Agr. Sci. Eng.

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Antitranspirants are exogenous substances applied to leaves to reduce luxury transpiration by regulating stomatal conductance to increase water use efficiency (WUE). A cheap and environmentally-friendly antitranspirant, FZ, was newly developed, extracted mainly from Alhagi sparsifolia. Its effects on soybean water use were investigated in a field experiment using the locally-used irrigation rate and a low irrigation rate (The lower and upper limit of irrigation is 40%-70% of field capacity). Foliar application of FZ and measurement of leaf physiological characteristics, final biomass, seed yield and water use efficiency were carried out during the pod bearing and pod filling stages of drip-irrigated soybean with film-mulching. Under the low irrigation rate, leaf stomatal conductance (g s) and transpiration rate (Tr) decreased significantly by 7 d after spraying, but photosynthesis (Pn) and instantaneous water use efficiency (WUE in) were not significantly affec ted. The stomatal frequency, stomatal aperture, g s , Tr and Pn decreased by 1 d after spraying, without significantly increasing WUE in. However, applying FZ during the pod bearing and pod filling stages did not significantly affect the final biomass, water consumption, seed yield and WUE of soybean. Under the locally-used irrigation rate, applying FZ increased the activities of superoxide dismutase and peroxidase in the leaves by 38% and 33%, respectively, but did not significantly affect g s , Tr, Pn, stomatal aperture and stomatal frequency. Applying FZ three times during pod bearing and pod filling stages enhanced seed yield and WUE by 24% and 21%, respectively, but did not significantly affect the final biomass and water consumption. Therefore, seed yield and WUE of soybean were significantly increased by foliar application of FZ during the pod bearing and pod filling stages under the locally-used irrigation rate in arid region, but applying FZ did not have a positive effect on water use efficiency of soybean under a low irrigation rate.

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Reduction of evaporative flux in bean leaves due to chitosan treatment assessed by infrared thermography

Cited by 12 publications

References 15 publications

Chitosan Oligosaccharide Addition to Buddhist Pine (Podocarpus macrophyllus (Thunb) Sweet) under Drought: Reponses in Ecophysiology and δ13C Abundance

Chitosan Oligosaccharide Addition to Buddhist Pine (Podocarpus macrophyllus (Thunb) Sweet) under Drought: Reponses in Ecophysiology and δ13C Abundance

Aerial Platforms (Uav) Surveys in the Vis and Tir Range. Applications on Archaeology and Agriculture

Effect of a new antitranspirant on the physiology and water use efficiency of soybean under different irrigation rates in an arid region

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