Identification of nutrient deficiency in maize and tomato plants by in vivo chlorophyll a fluorescence measurements

Kalaji, Hazem M.; Oukarroum, Abdallah; Alexandrov, V.; Kouzmanova, Margarita; Brestič, Marián; Živčák, Marek; Samborska, Izabela A.; Cetner, Magdalena D.; Allakhverdiev, Suleyman I.; Goltsev, Vasilij

doi:10.1016/j.plaphy.2014.03.029

Cited by 383 publications

(318 citation statements)

References 40 publications

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“…3.3 Chlorophyll a fluorescence and modulated 820 nm reflection transients J step appears because accumulation of Q A -reaches the maximal level (Strasser et al 1995;Kalaji et al 2014a). After 4 days of salt stress at 300 mM NaCl, J step was elevated in non-pretreated plants (Fig.…”

Section: Leaf Dry Weight Mda Namentioning

confidence: 93%

Salt pretreatment alleviated salt-induced photoinhibition in sweet sorghum

Zhao

Liu

et al. 2015

Theor. Exp. Plant Physiol.

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Sweet sorghum is an important energy crop. This study aimed to investigate the effects of salt pretreatment on the interaction between photosystem II (PSII) and photosystem I (PSI) upon salt stress. In this study, sweet sorghum was pretreated with 150 mM NaCl for 10 days, and subsequently, the pretreated plants were subjected to severe salt stress at 300 mM NaCl. PSII and PSI photoinhibition occurred in non-pretreated plants after 4 days of salt stress, as the maximum quantum yield of PSII (Fv/Fm) and the maximal photochemical capacity of PSI (4MR/MR 0 ) significantly decreased, and their normal coordination was destroyed. The significant positive correlation between Fv/Fm and 4MR/MR 0 under salt stress indicated that PSII photoinhibition was in relation to PSI photoinhibition, and PSI photoinhibition might lead to PSII photoinhibition through inhibiting electron transport at the acceptor side of PSII. Salt stress did not induce PSII photoinhibition in salt-pretreated plants, and thus, salt pretreatment protected PSI against photoinhibition not by aggravating PSII photoinhibition. Salt pretreatment mitigated the decrease in CO 2 assimilation, reduced the feedback inhibition on photosynthetic electron transport and then contributed to suppressing PSI and PSII photoinhibition in sweet sorghum under salt stress. Therefore, the normal coordination between PSII and PSI was maintained in salt-pretreated plants. In conclusion, salt pretreatment ensured normal PSII and PSI coordination by preventing photoinhibition in sweet sorghum under salt stress.

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Section: Leaf Dry Weight Mda Namentioning

confidence: 93%

Salt pretreatment alleviated salt-induced photoinhibition in sweet sorghum

Zhao

Liu

et al. 2015

Theor. Exp. Plant Physiol.

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“…The relative value of maximal difference of 820 nm reflection during the last 2 s red illumination was used to indicate DMR/MR 0 (Schansker et al, 2003). Chlorophyll fluorescence transients were quantified to calculate Fv/Fm (Kalaji et al, 2014).…”

Section: Measurements Of Photosynthetic Parametersmentioning

confidence: 99%

Saline stress enhanced accumulation of leaf phenolics in honeysuckle ( Lonicera japonica Thunb.) without induction of oxidative stress

Zhao

Bian

et al. 2017

Plant Physiology and Biochemistry

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a b s t r a c tHoneysuckle (Lonicera japonica Thunb.) is a traditional medicinal plant in Chinese, and chlorogenic acid and luteolosid are its specific bioactive phenolic compounds. This study was to investigate leaf antioxidant responses in honeysuckle to saline stress with emphasis on phenolics through hydroponic experiments and field trials. NaCl stress did not stimulate antioxidant system including superoxide dismutase, ascorbate peroxidase, catalase and ascorbate, and had no significant effect on lipid peroxidation in the leaves. Consistently, no inhibition on photochemical capacity of photosystems suggested that reactive oxygen species (ROS) was maintained at a normal level under NaCl stress. However, leaf phenolic synthesis was activated by NaCl stress, indicated by elevated genes transcription and activity of phenylalanine ammonia-lyase and increased phenolics concentration. Specifically, leaf chlorogenic acid concentration was increased by 67.43% and 48.86% after 15 days of 150 and 300 mM NaCl stress, and the increase of luteolosid concentration was 54.26% and 39.74%. The accumulated phenolics hardly helped detoxify ROS in vivo in absence of oxidative stress, but the elevated phenolic synthesis might restrict ROS generation by consuming reduction equivalents. As with NaCl stress, soil salinity also increased concentrations of leaf phenolics including chlorogenic acid and luteolosid without exacerbated lipid peroxidation. In conclusion, leaf phenolics accumulation is a mechanism for the acclimation to saline stress probably by preventing oxidative stress in honeysuckle; leaf medicinal quality of honeysuckle can be improved by saline stress due to the accumulation of bioactive phenolic compounds.

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“…Measuring the latter develops to be the main method in studying plant responses to various environmentally induced stresses. Implementing the OJIP Test to ChF measurement data provides detailed information on electron transport chain (ETC) in thylakoid membranes, and photosystem II (PSII) structure and ef ciency (Kalaji et al, 2014). The aim of this paper was to characterise changes in ETC and PSII ef ciency and structure induced by nitrogen de ciency in radish plant growth environment, both during stress and recovery.…”

Section: Ambient Air Particulate Matter -A New Paradigm Of Toxicitymentioning

confidence: 99%

“…104: 187 -192. (Kalaji et al 2014). In this study, chlorophyll uorescence technique was exploited to understand the changes of the photosynthetic apparatus of radish plants grown under magnesium de ciency conditions.…”

Section: Referencesmentioning

confidence: 99%

10th International Conference, Plant Functioning Under Environmental Stress, September 16-19, 2015, Cracow, Poland

Grzesiak¹

2015

Acta Physiol Plant

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Identification of nutrient deficiency in maize and tomato plants by in vivo chlorophyll a fluorescence measurements

Cited by 383 publications

References 40 publications

Salt pretreatment alleviated salt-induced photoinhibition in sweet sorghum

Salt pretreatment alleviated salt-induced photoinhibition in sweet sorghum

Saline stress enhanced accumulation of leaf phenolics in honeysuckle ( Lonicera japonica Thunb.) without induction of oxidative stress

10th International Conference, Plant Functioning Under Environmental Stress, September 16-19, 2015, Cracow, Poland

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