Photosynthetic performance of quinoa (Chenopodium quinoa Willd.) after exposure to a gradual drought stress followed by a recovery period

Manaa, Arafet; Goussi, Rahma; Derbali, Walid; Cantamessa, Simone; Essemine, Jemâa; Barbato, Roberto

doi:10.1016/j.bbabio.2021.148383

Cited by 26 publications

(23 citation statements)

References 82 publications

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“…Recent studies revealed that drought resistance in quinoa var. Red Faro was due to elevated recovery capacities of PSII and PSI photochemical activities after re-watering [ 88 ]. There are numerous studies focused on molecular, biochemical, physiological, and morphological responses of varied quinoa genotypes to drought both under laboratory and field conditions.…”

Section: Drought Coping Strategies and Resistancementioning

confidence: 99%

Drought Stress Responses: Coping Strategy and Resistance

Bandurska

2022

Plants

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Plants’ resistance to stress factors is a complex trait that is a result of changes at the molecular, metabolic, and physiological levels. The plant resistance strategy means the ability to survive, recover, and reproduce under adverse conditions. Harmful environmental factors affect the state of stress in plant tissues, which creates a signal triggering metabolic events responsible for resistance, including avoidance and/or tolerance mechanisms. Unfortunately, the term ‘stress resistance’ is often used in the literature interchangeably with ‘stress tolerance’. This paper highlights the differences between the terms ‘stress tolerance’ and ‘stress resistance’, based on the results of experiments focused on plants’ responses to drought. The ability to avoid or tolerate dehydration is crucial in the resistance to drought at cellular and tissue levels (biological resistance). However, it is not necessarily crucial in crop resistance to drought if we take into account agronomic criteria (agricultural resistance). For the plant user (farmer, grower), resistance to stress means not only the ability to cope with a stress factor, but also the achievement of a stable yield and good quality. Therefore, it is important to recognize both particular plant coping strategies (stress avoidance, stress tolerance) and their influence on the resistance, assessed using well-defined criteria.

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Section: Drought Coping Strategies and Resistancementioning

confidence: 99%

Drought Stress Responses: Coping Strategy and Resistance

Bandurska

2022

Plants

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“…Plant drought response mechanisms have been reported in quinoa and include reduced growth [ 23 , 69 ], stomatal closure associated with abscisic acid and hydraulic signaling [ 22 , 25 , 82 , 83 , 84 ], peroxisome abundance as a cellular sensor [ 68 ], the accumulation of osmoprotectants, antioxidant defense and membrane stabilization [ 19 , 20 , 26 , 27 ], and elevated recovery capacities of PSII and PSI photochemical activities after re-watering [ 85 ]. Understanding how the physiological mechanisms employed by quinoa in response to drought as well as specific strategies implemented by different genotypes influence the final yield is crucial for both crop management and breeding.…”

Section: Discussionmentioning

confidence: 99%

Morphological and Physiological Traits Associated with Yield under Reduced Irrigation in Chilean Coastal Lowland Quinoa

Dumschott

Wuyts

Alfaro

et al. 2022

Plants

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Quinoa (Chenopodium quinoa Willd.) is a genetically diverse crop that has gained popularity in recent years due to its high nutritional content and ability to tolerate abiotic stresses such as salinity and drought. Varieties from the coastal lowland ecotype are of particular interest due to their insensitivity to photoperiod and their potential to be cultivated in higher latitudes. We performed a field experiment in the southern Atacama Desert in Chile to investigate the responses to reduced irrigation of nine previously selected coastal lowland self-pollinated (CLS) lines and the commercial cultivar Regalona. We found that several lines exhibited a yield and seed size superior to Regalona, also under reduced irrigation. Plant productivity data were analyzed together with morphological and physiological traits measured at the visible inflorescence stage to estimate the contribution of these traits to differences between the CLS lines and Regalona under full and reduced irrigation. We applied proximal sensing methods and found that thermal imaging provided a promising means to estimate variation in plant water use relating to yield, whereas hyperspectral imaging separated lines in a different way, potentially related to photosynthesis as well as water use.

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“…It is probably, that the stress conditions where OJIP parameters changed substantially in other reports, the photosynthetic apparatus also had undergone significant changes. The maximum quantum yield, ΦPo (= F V / F M ), reportedly does not change untill the plant undergoes severe stress beyond recover, such as loss of 90% loss of chlorophylls (Oukarroum et al 2009; Osório et al 2014; Manaa et al 2021). Changes of other parameters, for example, slight increase in dissipation parameter (ΦDo, DIo/RC) and inactivation parameter of PSII reaction center (ABS/RC) was observed in nutrient-deficient leaves in previous report (Kalaji et al 2014).…”

Section: Discussionmentioning

confidence: 99%

The effect of treatment of auxin producing bacterial culture supernatant in combination with organic and inorganic fertilizers

Park¹,

Shin²

2022

Preprint

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Bacteria that secret plant growth promoting substances are good candidate for field application to improve crop yield. Especially, bacteria that excrete auxin can enhance root growth and settlement of crops to help adapting new soil environment when transplanted. In this study, we applied culture supernatant of an auxin producing bacteria Ignatzschineria sp. CG20001. The bacterial culture supernatant (BCS) was applied in combination with chicken manure and liquid chemical fertilizer. The treatment of bacterial culture supernatant enhanced growth of red kohlrabi, Brassica oleraceae var. gongyloides, especially in combination with chicken manure. To understand mechanisms related higher growth, we compared photosynthetic efficiency by measuring chlorophyll fluorescence and light harvesting antenna pigments composition. The performance index PS II was higher in BCS treated plants, and recovered faster after leaf harvest. Photoprotective mechanism was also increased in BCS treated plants, however, and DTT infiltration, non-photochemical quenching (NPQ) reduced to similar level, implying higher xanthophyll cycle dependent NPQ induction mechanism in BCS treated plants. However, in liquid chemical fertilized plants, BCS treated and non-treated plants showed the opposite pattern in the change of NPQ. The chlorophyll a/b ratio was highest in no-fertilized non-treated control, and lowest in chicken manure and BCS combination, implying impact of nutrition availability between the two groups. Through these results, we conclude that the appropriate combination of organic fertilizer and plant growth promoting bacterial metabolite can improve plant growth more than chemical fertilizers. This study also provides physiological understanding for strategic fertilization regime of organic fertilizer and biofertilizer combination.

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Photosynthetic performance of quinoa (Chenopodium quinoa Willd.) after exposure to a gradual drought stress followed by a recovery period

Cited by 26 publications

References 82 publications

Drought Stress Responses: Coping Strategy and Resistance

Drought Stress Responses: Coping Strategy and Resistance

Morphological and Physiological Traits Associated with Yield under Reduced Irrigation in Chilean Coastal Lowland Quinoa

The effect of treatment of auxin producing bacterial culture supernatant in combination with organic and inorganic fertilizers

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