Optimal light intensity and quality increased the saffron daughter corm yield by inhibiting the degradation of reserves in mother corms during the reproductive stage

Zhou, Tao; Qiu, Xue; Li, Zhao; Yang, Weijing; Wen, Feiyan; Wu, Qinghua; Yan, Jie; Xu, Binjie; Jiang, Chen; Ma, Yuntong; Pei, Jin

doi:10.1016/j.indcrop.2021.114396

Cited by 19 publications

(12 citation statements)

References 51 publications

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“…The sugars were extracted according to a published protocol ( Zhou et al., 2022 ). Samples were taken at different aging time points; the seed embryos were freeze-dried (FDU-2110, EYELA, Japan), then ground in a clean mortar, and put into an Eppendorf tube.…”

Section: Methodsmentioning

confidence: 99%

Comparative changes in sugars and lipids show evidence of a critical node for regeneration in safflower seeds during aging

Zhou

Chen

et al. 2022

Front. Plant Sci.

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During seed aging, there is a critical node (CN) where the population viability drops sharply. Exploring the specific locations of the CN in different species of plants is crucial for understanding the biological storage properties of seeds and refining seed life span management. Safflower, a bulk oil crop that relies on seeds for propagation, has a short seed life. However, at present, its biological characteristics during storage are not clear, especially the changes in metabolic capability and cell structures. Such knowledge is needed to improve the management of safflower seed life span and effective preservation in gene banks. Here, the seed survival curve of oilseed safflower under the controlled deterioration conditions of 60% relative humidity and 50°C was detected. The seed population showed an inverted S shape for the fall in germination. In the first 12 days of aging, germination remained above 86%. Prior to the CN at approximately day 10 (C10), when viability was in the “plateau” interval, seed vigor reduced at the same imbibition time point. Further analysis of the changes in sugar concentration found that the sucrose content decreased slowly with aging and the content of raffinose and two monosaccharides decreased abruptly at C10. Differentially metabolized lipids, namely lysophospholipids [lyso-phosphatidylcholine (LPC) and lyso-phosphatidylethanolamines (LPE)] and PMeOH, increased at day 3 of aging (C3). Fatty acid content increased by C6, and the content of phospholipids [phosphatidylcholines (PC), phosphatidylethanolamines (PE), and phosphatidylinositols (PI) and glycolipids [digalactosyl diacylglycerol, monogalactosyl diacylglycerol, and sulphoquinovosyl diglycerides (SQDG)] decreased significantly from C10. In addition, the activities of raffinose hydrolase alpha-galactosidase and the glyoxylate key enzyme isocitrate lyase decreased with seed aging. Confocal microscopy and transmission electron microscopy revealed shrinkage of the seed plasma membrane at C10 and the later fragmentation. Seedling phenotypic indicators and 2,3,5-triphenyltetrazolium chloride activity assays also verified that there were significant changes in seeds quality at the CN. In summary, the time point C10 is a CN during seed population aging. Before the CN, sugar and lipid metabolism, especially fatty acid metabolism into sugar, can make up for the energy consumed by aging. After this point, the seeds were irreversibly damaged, and their viability was greatly and rapidly reduced as the cell structure became increasingly destroyed.

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Section: Methodsmentioning

confidence: 99%

Comparative changes in sugars and lipids show evidence of a critical node for regeneration in safflower seeds during aging

Zhou

Chen

et al. 2022

Front. Plant Sci.

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“…Applying organic and biological fertilizers with high water-absorbing, and irrigating every four weeks can improve the yields of the daughter corms (Shajari et al 2018). Besides, some studies improve stigma yield by two-segment cropping system (Wang et al 2021;Zhou et al 2022). The corms without any culture medium are cultivated in cultivation rooms for dormancy and flowering from June to November, and then are transplanted to the fields for vegetative development from December to May (Renau-Morata et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Moradi et al (2021) have found that a high ratio of blue to red light-emitting diodes (LEDs) can improve the photosynthetic performance of saffron leaves by facilitating electron flow between photosystem I and II, and enhance the daughter corm yields and carbohydrate accumulations for saffron. A higher light intensity and a higher proportion of blue light significant increased leaf area, total yield of daughter corms, and proportion of larger-sized daughter corms, as well as 200 μmol m −2 s −1 (the ratio of blue and red light was 2 : 3 (namely 2B3R) in spectrum containing red, blue, green, and white LEDs) was regarded as optimal light in comparison to 56 μmol m −2 s −1 (1B3R), 200 μmol m −2 s −1 (1B3R), and 200 μmol m −2 s −1 (1B4R) (Zhou et al 2022). However, both studies above did not directly investigate the effect of LED lighting on leaf photosynthesis and corm yields during the vegetative development.…”

Section: Introductionmentioning

confidence: 99%

Study on spectral response of saffron (Crocus sativus L.) at different leaf ages and evaluation on photosynthetic energy efficiency of narrow-band LED spotlights

Gao,

Yuan,

Pei

et al. 2023

Preprint

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Leaf photosynthesis largely determines the daughter corm yields in vegetative growth for saffron (Crocus sativus L.). Most of previous researches focuses on spectral response in various species, but lacking the study on saffron leaves at different leaf ages. In this study, the action spectrum based on photosynthetic photon flux density (PPFD) and irradiance were distinguished and interpretated. The optical properties and photosynthetic performances of leaves were respectively investigated at two leaf ages, dependence on customized narrow-band LED spotlights from 380 nm to 780 nm with an interval 20 nm and a band width 10 nm. The younger leaves charactered higher reflectance and transmittance at 500 − 600 nm, resulting in lower absorptance compared to the older leaves. The spectral response curves including action spectrum and quantum yield for younger leaves were higher than the older, but their relative curves displayed coincidence. The spectral response curves exhibited two peaks at 440 and 640 nm, but not low between 500 and 600 nm. Nevertheless, the photosynthetic energy efficiency of spotlights demonstrated very low in green/yellow region. Accordingly, more attentions should be paid to green and yellow LED lighting during the vegetative stage for saffron, as well as improving their manufacturing technology.

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“…However, the cultivation of saffron has been limited owing to the low yield of flowers, which are affected by the environmental conditions during growth (Gresta et al 2008). Many studies intensively report methods how to stimulate the growth of saffron, eliminate water stress, control water salinity during irrigation, apply manure, control temperature and light (Renau-Morata et al 2012, Yarami and Sepaskhah 2015, Zhou et al 2022. Previous studies lack sufficient and detailed information that describes the effects of LED light on saffron growth and photosynthetic characteristics.…”

Section: Introductionmentioning

confidence: 99%

Effect of different LED-lighting quality conditions on growth and photosynthetic characteristics of saffron plants (Crocus sativus L.)

Zhu¹,

ZHANG²,

Liu-qing³

et al. 2022

Photosynt.

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Abbreviations: B -blue light; Ci -intercellular CO2 concentration; DI0/RC -dissipated energy flux per reaction center; E -transpiration rate; ET0/RC -electron transport flux from QA to QB; Fm -the maximum fluorescence in the OJIP curve; Fo -the minimum fluorescence in the OJIP curve; gs -stomatal conductance; M0 -the initial slope from 0.02 ms to 300 ms in a linear time scale; OEC -oxygenevolving complex; PItotal -performance index for the conservation of energy from photons absorbed by the PSII antenna to the reduction of PSI acceptors; PN -net photosynthetic rate; PQ -plastoquinone; QA -primary quinone acceptor of PSII; QA --reduced primary quinone acceptor of PSII; QA + -oxidized primary quinone acceptor of PSII; QB -secondary quinone acceptor of PSII; R -red light; RC -reaction center; RC/CSm -reaction centers per CS (t = m); VI -normalized variable fluorescence at 30 ms (I point); VJ -normalized variable fluorescence at 2 ms (J point); VPD -vapor pressure deficit; Vt -normalized variable fluorescence at time t; WUE -wateruse efficiency; δRo -efficiency with which an electron from QB is transferred until PSI acceptors; φEo -quantum yield of the electron transport flux from QA to QB; φPo -maximum quantum yield of primary photochemistry; φRo -quantum yield of the electron transport flux until the PSI electron acceptors; ψEo -electron transport efficiency from QAto the PSI electron end acceptors; ψRo -electron transport efficiency except QA.

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Optimal light intensity and quality increased the saffron daughter corm yield by inhibiting the degradation of reserves in mother corms during the reproductive stage

Cited by 19 publications

References 51 publications

Comparative changes in sugars and lipids show evidence of a critical node for regeneration in safflower seeds during aging

Comparative changes in sugars and lipids show evidence of a critical node for regeneration in safflower seeds during aging

Study on spectral response of saffron (Crocus sativus L.) at different leaf ages and evaluation on photosynthetic energy efficiency of narrow-band LED spotlights

Effect of different LED-lighting quality conditions on growth and photosynthetic characteristics of saffron plants (Crocus sativus L.)

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