Early detection of drought stress in tomato plants with chlorophyll fluorescence imaging–practical application of the speaking plant approach in a greenhouse–

Takayama, Kotaro; Nishina, Hiroshige; Iyoki, Soushi; Arima, Seiichi; Hatou, Kenji; Ueka, Yuko; Miyoshi, Yuzuru

doi:10.3182/20110828-6-it-1002.01490

Cited by 22 publications

(15 citation statements)

References 8 publications

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“…The maximum efficiency of photosystem II was obtained with the ratio Fv/Fm that is used as a sensitive indicator of plant photosynthetic performance with an optimal of around 0.83 measured for most plant species. The values could decrease when plants were Environ Chem Lett exposed to abiotic (Takayama et al 2011) or biotic stress (Wagner et al 2006). Measurements were taken according to Murchie and Lawson (2013), in the dark, with a portable photosynthesis system Li-Cor 6400 (Li-Cor Biosciences, Lincoln, NE, USA) on one leaflet of the leave number 3 from the plant collar.…”

Section: Physiological Parameters Of Plantsmentioning

confidence: 99%

Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

et al. 2015

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Microcystins are cyclic heptapeptides hepatotoxins produced by aquatic cyanobacteria such as Microcystis aeruginosa. The wide occurrence of toxic microcystins in freshwater is a threat to water quality and health of living organisms. Here, we irrigated an agricultural soil daily with a cyanobacterial extract diluted at environmental concentrations of microcystin-leucine-arginine, from 0.005 to 0.1 mg equivalent MC-LR L -1 , for 90 days. We analyzed the impact on the growth and physiology of tomato, Solanum lycopersicum cultivar MicroTom. Our results show a stimulation of the tomato plant development, in terms of inflorescence and blooming, after exposure to the lowest concentration, of 0.005 mg eq. MC-LR L -1 , during the 40 first days postgermination. That effect was not apparently associated with physiological disturbances of the tomato plants.

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Section: Physiological Parameters Of Plantsmentioning

confidence: 99%

Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

et al. 2015

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“…Plants adapt photosynthesis to a certain degree in response to the prevailing environment, and the sensitivity of photosynthesis to stress varies among plant species and cultivars. ChlF, a noninvasive technique, offers highly accurate measurements that illustrate the photosynthetic performance of plants, and is often used to investigate a plant's response to various abiotic and biotic stresses in controlled environments and in the field (Nedbal et al 2000, Pineda et al 2008, Rahbarian et al 2011, Takayama et al 2011, Dos Anjos et al 2012, Wilson and Jacobs 2012, Huang et al 2013, Muniz et al 2014. Measuring ChlF is a simple, rapid, and accurate method that can be performed with portable equipment, during which no materials are consumed (Molina-Bravo et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic activity of red and green leaf sectors in Coleus blumei plants as sensed by chlorophyll fluorescence

Lin¹,

Huang²,

Weng³

et al. 2019

Photosynt.

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The changes and responses in the chlorophyll (Chl) fluorescence (ChlF) components were studied on the red and green parts of leaves in three Coleus blumei varieties under different light intensities. Chl a, carotenoids (Car), and SPAD were linearly, positively, and significantly correlated with total Chl [i.e., Chl (a+b)] of red and green leaves. Significant differences in Chl and Car contents were noted between differentially pigmented sectors of the leaf, but no anthocyanin content was found in the green parts compared to red leaves. Values of minimal and maximal fluorescence yields in darkand light-adapted states in both red and green leaves were all positively and significantly correlated with Chl contents under dark conditions and all PPFD treatments for 20 min. Assessing the ChlF parameters under PPFD variations is an important tool for finding improved photosynthetic productivity of plants.

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“…CF analysis is often used to investigate a plant response to various abiotic (in particular, high-light intensity, heavy metals, drought, low temperature) and biotic stresses (e.g. herbivore or pathogen attack), and to assess plant stress tolerance (Nedbal et al 2000, Pineda et al 2008, Takayama et al 2011, Borek et al 2012, Dos Anjos et al 2012, Muniz et al 2014. The aim of this study was to determine the actual state of photosynthetic apparatus in differentially pigmented leaves.…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic activity of variegated leaves of Coleus × hybridus hort. cultivars characterised by chlorophyll fluorescence techniques

2016

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Different pigments often occur together and affect photosynthetic characteristics of the respective leaf portions. In this study, photosynthetic activity in variegated leaves of five cultivars of the ornamental and medicinal plant, Coleus × hybridus hort., was estimated by image analysis and point data measurements of major chlorophyll (Chl) fluorescence parameters and related to the amount of photosynthetic pigments measured with a Chl meter or spectrophotometrically in leaf extracts. Significant differences in Chl and carotenoid (Car) contents were noticed among differentially pigmented sectors of a leaf and among the cultivars. Although the higher Chl concentration was noticed in purple parts compared to green parts of the leaves, the values of minimal and maximal fluorescence yield at the dark-and light-adapted state (F0, F m , F 0 ', F m ', respectively) were a little lower than those in the green sectors, indicating photoprotective effects provided by anthocyanins and Car, more abundant in the red parts. The lowest Chl and Car content was detected in creamy-yellow and pink sectors and this contributed to low F 0 , F m , and F m ', maximal quantum yield of PSII photochemistry, and nonphotochemical and photochemical quenching but high PSII maximum efficiency and effective quantum yield of PSII photochemistry. Both methods of Chl fluorescence analysis revealed heterogeneity in capture, transfer, and dissipation of excitation energy but Chl fluorescence imaging was more suitable in examining very narrow pigmented leaf areas.

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Early detection of drought stress in tomato plants with chlorophyll fluorescence imaging–practical application of the speaking plant approach in a greenhouse–

Cited by 22 publications

References 8 publications

Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

Soil irrigation with water and toxic cyanobacterial microcystins accelerates tomato development

Photosynthetic activity of red and green leaf sectors in Coleus blumei plants as sensed by chlorophyll fluorescence

Photosynthetic activity of variegated leaves of Coleus × hybridus hort. cultivars characterised by chlorophyll fluorescence techniques

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