Physiological effects of short acute UVB treatments in Chenopodium quinoa Willd

Reyes, Thais Huarancca; Scartazza, Andrea; Castagna, Antonella; Cosio, Eric G.; Ranieri, Annamaria; Guglielminetti, Lorenzo

doi:10.1038/s41598-017-18710-2

Cited by 37 publications

(25 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, Reyes et al (2018) reported the first study on the effect of UV-B on quinoa photosynthesis [238]. In this study, chlorophyll fluorescence, pigment synthesis, photosynthesis, and ROS accumulation were affected by different levels and duration of UV-B.…”

Section: Ultraviolet B (Uv-b) Radiationmentioning

confidence: 61%

Quinoa Abiotic Stress Responses: A Review

Hinojosa

González

Barrios-Masias

et al. 2018

Plants

199

169

View full text Add to dashboard Cite

Quinoa (Chenopodium quinoa Willd.) is a genetically diverse Andean crop that has earned special attention worldwide due to its nutritional and health benefits and its ability to adapt to contrasting environments, including nutrient-poor and saline soils and drought stressed marginal agroecosystems. Drought and salinity are the abiotic stresses most studied in quinoa; however, studies of other important stress factors, such as heat, cold, heavy metals, and UV-B light irradiance, are severely limited. In the last few decades, the incidence of abiotic stress has been accentuated by the increase in unpredictable weather patterns. Furthermore, stresses habitually occur as combinations of two or more. The goals of this review are to: (1) provide an in-depth description of the existing knowledge of quinoa’s tolerance to different abiotic stressors; (2) summarize quinoa’s physiological responses to these stressors; and (3) describe novel advances in molecular tools that can aid our understanding of the mechanisms underlying quinoa’s abiotic stress tolerance.

show abstract

Section: Ultraviolet B (Uv-b) Radiationmentioning

confidence: 61%

Quinoa Abiotic Stress Responses: A Review

Hinojosa

González

Barrios-Masias

et al. 2018

Plants

199

169

View full text Add to dashboard Cite

show abstract

“…In addition, the unbalanced visible radiation/UV-B is an experimental strategy commonly used (i.e. [11, 35, 39]) to magnify the effect of a single stress in plants, which can be useful for elucidation of response mechanisms.…”

Section: Discussionmentioning

confidence: 99%

Physiological responses of Lepidium meyenii plants to ultraviolet-B radiation challenge

et al. 2019

Self Cite

View full text Add to dashboard Cite

Background Ultraviolet-B (UV-B) radiation can affect several aspects ranging from plant growth to metabolic regulation. Maca is a Brassicaceae crop native to the Andes growing in above 3500 m of altitude. Although maca has been the focus mainly due to its nutraceutical properties, it remains unknown how maca plants tolerate to harsh environments, such as strong UV-B. Here, we present the first study that reports the physiological responses of maca plants to counteract and recover to repeated acute UV-B irradiation. Results In detail, plants were daily exposed to acute UV-B irradiation followed by a recovery period under controlled conditions. The results showed that repeated acute UV-B exposures reduced biomass and photosynthetic parameters, with gradual senescence induction in exposed leaves, reduction of young leaves expansion and root growth inhibition. Negative correlation between increased UV-B and recovery was observed, with marked production of new biomass in plants treated one week or more. Conclusions A differential UV-B response was observed: stress response was mainly controlled by a coordinated source-sink carbon allocation, while acclimation process may require UV-B-specific systemic defense response reflected on the phenotypic plasticity of maca plants. Moreover, these differential UV-B responses were also suggested by multifactorial analysis based on biometric and physiological data. Electronic supplementary material The online version of this article (10.1186/s12870-019-1755-5) contains supplementary material, which is available to authorized users.

show abstract

“…Secondary metabolites, like flavonoids, have special roles in determining plants quality because they contribute to the colours and flavours of vegetables and fruits, and may have high antioxidant levels that help protect humans from degenerative diseases 1–3 . Fertilization can increase biomass production in medicinal plant, vegetable and crop cultivation systems; however, it can decrease the biosynthesis and accumulation of physiologically active substances, including flavonoids and terpenes, and further impact the quality of raw materials 4,5 .…”

Section: Introductionmentioning

confidence: 99%

Nitrogen availability alters flavonoid accumulation in Cyclocarya paliurus via the effects on the internal carbon/nitrogen balance

Deng

et al. 2019

Sci Rep

View full text Add to dashboard Cite

Cyclocarya paliurus has traditionally been used in medicines and nutraceutical foods. The aims of this study were to determine whether flavonoid accumulation in C. paliurus is dependent on nitrogen (N) availability and to investigate the internal C (carbon)/N balance under controlled conditions. One-year-old seedlings were grown under five increasing available N level treatments (N1–5) and were harvested throughout the 15-d experimental period. The greatest total chlorophyll amount and photosynthetic rate were achieved during the intermediate N treatments (N3 and N4). The greatest starch level was detected in N3. The total C level was relatively stable, but the total N and free amino acid levels increased, which resulted in a decreased C:N ratio. The flavonoid contents in roots and stalks decreased, while leaves showed a different pattern (peaking in N3). The flavonoid level was closely correlated with flavanone-3-hydroxylase activity, which displayed a similar variation pattern, and their levels were significantly positively correlated with those of total C and starch. Thus, the partitioning of C among primary and secondary metabolisms could be responsible for flavonoid biosynthesis and provide the basis for maintaining high yields, which increases the nutritional values of crops and medicinal plants.

show abstract

Physiological effects of short acute UVB treatments in Chenopodium quinoa Willd

Cited by 37 publications

References 42 publications

Quinoa Abiotic Stress Responses: A Review

Quinoa Abiotic Stress Responses: A Review

Physiological responses of Lepidium meyenii plants to ultraviolet-B radiation challenge

Nitrogen availability alters flavonoid accumulation in Cyclocarya paliurus via the effects on the internal carbon/nitrogen balance

Contact Info

Product

Resources

About