The Effect of High-Temperature Stress on the Physiological Indexes, Chloroplast Ultrastructure, and Photosystems of two Herbaceous Peony Cultivars

Zhang, Lixia; Chang, Qingshan; Hou, Xiaogai; Wang, Jianzhang; Chen, Sudan; Zhang, Qiaoming; Wang, Zi; Yin, Yong; Liu, Jianke

doi:10.1007/s00344-022-10647-9

Cited by 10 publications

(8 citation statements)

References 50 publications

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“…Net photosynthetic rate can directly represent the photosynthetic capacity of a single leaf ( Jiang et al., 2004 ). Zhang et al. (2022) showed that under high temperature stress, the net photosynthetic rate of plants decreased continuously, but there were significant differences among different cultivars.…”

Section: Discussionmentioning

confidence: 98%

“…Net photosynthetic rate can directly represent the photosynthetic capacity of a single leaf (Jiang et al, 2004). Zhang et al (2022) showed that under high temperature stress, the net photosynthetic rate of plants decreased continuously, but there were significant differences among different cultivars. This study showed that the net photosynthetic rate of 'Lu He Hong' decreased with the deepening of stress degree, and that of 'Zhi Hong' decreased first and then increased to the normal level within six days under temperature stress, indicating that high temperature stress has a negative effect on the photosynthesis of peony plants, which is consistent with (Zhang et al, 2022).…”

Section: Effect Of High Temperature Stress On Photosynthetic Characte...mentioning

confidence: 99%

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Photosynthetic and physiological responses of different peony cultivars to high temperature

Wen

Hong²,

Chen³

et al. 2022

Front. Plant Sci.

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In order to investigate the causes of the differences in heat tolerance (‘Lu He Hong’ and ‘Zhi Hong’), we studied the physiological changes, photosynthetic properties and regulatory mechanism of the two peony cultivars at high temperature. The results showed that the physiological changed of different peony cultivars varied significantly under high temperature stress. With the extension of high temperature stress time, MDA content of 'Lu He Hong' increased,while 'Zhi Hong' rised first and then decreased, SOD activity of 'Lu He Hong' rised first and then decreased, that of 'Zhi Hong' kept rising, POD activity of 'Lu He Hong' kept decreasing, while 'Zhi Hong' rised. The photosynthetic instrument records the change of peony photosynthesis parameters at high temperature; the chlorophyll A (Chla) fluorescence transient is recorded using the plant efficiency analyzer (PEA), analyzed according to the JIP test (O-J-I-P fluorescence transient analysis), and several parameters were derived to explain the photosynthetic efficiency difference between different peony cultivars. The tested cultivars responded differently to the survey conditions, and the PCA analysis showed that the ‘Zhi Hong’ was more well tolerated and showed better thermal stability of the PSII. The reduced efficiency of the ‘Lu He Hong’ PSII antenna leads to higher heat dissipation values to increase the light energy absorbed by unit reaction center (ABS/RC), the energy captured by unit reaction center (TR0/RC), and the energy dissipated by unit reaction center (DI0/RC), which significantly leads to its lower total photosynthetic performance (PItotal). The light capture complex of the variety ‘Zhi Hong’ has high connectivity with its reaction center, less damage to OEC activity, and better stability of the PSII system. The results show that ‘Zhi Hong’ improves heat resistance by stabilizing the cell membrane, a strong antioxidant system, as well as a more stable photosynthetic system. The results of this study provide a theoretical basis for the screening of heat-resistant peonies suitable for cultivation in Jiangnan area and for the selection and breeding of heat-resistant cultivars.

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Section: Discussionmentioning

confidence: 98%

Section: Effect Of High Temperature Stress On Photosynthetic Characte...mentioning

confidence: 99%

Photosynthetic and physiological responses of different peony cultivars to high temperature

Wen

Hong²,

Chen³

et al. 2022

Front. Plant Sci.

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“…As noted previously, electrons migrate from PSII to PSI via Q A and PQ during light harvesting. When the electron flow to Q A declined (TRo/CSm), there would generally be a concomitant decline in energy flux from Q A to PQ too, as evaluated by ETo/CSm [ 23 , 43 ]. Likewise, when OJIP traits were expressed as energy fluxes per absorbed photo flux, declines in TRo/ABS and ETo/ABS were detected as well.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies pointed out that heat stress impaired a range of OJIP fluorescence traits in croftonweed ( Ageratina adenophora ) and peony ( P. lactiflora ) [ 43 , 44 ]. However, more heat-tolerant populations or cultivars typically better maintained absorbed energy flux, energy flux trapped by PSII, electron transport from Q A to PQ, as well as quantum efficiencies of energy trapping, dissipation, and electron transport from Q A to PQ.…”

Section: Discussionmentioning

confidence: 99%

“…To our knowledge, this is the first time that the application of OJIP fluorescence in abiotic stress response has been reported in creeping bentgrass. It could serve as a valuable tool for actual dissection of photosynthetic processes and help understand which steps of light-harvesting electron transport were more sensitive to heat stress [ 43 , 44 ]. Such information would provide deeper insights into heat-induced photosynthetic declines, allowing for a more targeted screening and improvement of heat tolerance in plants.…”

Section: Discussionmentioning

confidence: 99%

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Assessing Heat Tolerance in Creeping Bentgrass Lines Based on Physiological Responses

Fan

Jespersen

2022

Plants

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Heat stress is a major concern for the growth of cool-season creeping bentgrass (Agrostis stolonifera L.). Nonetheless, there is a lack in a clear and systematic understanding of thermotolerance mechanisms for this species. This study aimed to assess heat tolerance in experimental lines and cultivars to determine important physiological and biochemical traits responsible for improved tolerance, including the use of OJIP fluorescence. Ten creeping bentgrass lines were exposed to either control (20/15 °C day/night) or high temperature (38/33 °C day/night) conditions for 35 d via growth chambers at Griffin, GA. Principal component analysis and clustering analysis were performed to rank stress performance and divide lines into different groups according to their tolerance similarities, respectively. At the end of the trial, S11 729-10 and BTC032 were in the most thermotolerant group, followed by a group containing BTC011, AU Victory and Penncross. Crenshaw belonged to the most heat-sensitive group while S11 675-02 and Pure Eclipse were in the second most heat-sensitive group. The exceptional thermotolerance in S11 729-10 and BTC032 was associated with their abilities to maintain cell membrane stability and protein metabolism, plus minimize oxidative damages. Additionally, among various light-harvesting steps, energy trapping, dissipation and electron transport from QA to PQ were more heat-sensitive than electron transport from QA to final PSI acceptors. Along with the strong correlations between multiple OJIP parameters and other traits, it reveals that OJIP fluorescence could be a valuable tool for dissection of photosynthetic processes and identification of the critical steps responsible for photosynthetic declines, enabling a more targeted heat-stress screening. Our results indicated that variability in the level of heat tolerance and associated mechanisms in creeping bentgrass germplasm could be utilized to develop new cultivars with improved thermotolerance.

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Analysis of dataset on reduction of high temperature stress by green net shade alleviate oxidative stress and augments the growth and vase life of gladiolus cut flower

Qayyum,

Hassan,

Khan

et al. 2024

Data in Brief

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The Effect of High-Temperature Stress on the Physiological Indexes, Chloroplast Ultrastructure, and Photosystems of two Herbaceous Peony Cultivars

Cited by 10 publications

References 50 publications

Photosynthetic and physiological responses of different peony cultivars to high temperature

Photosynthetic and physiological responses of different peony cultivars to high temperature

Assessing Heat Tolerance in Creeping Bentgrass Lines Based on Physiological Responses

Analysis of dataset on reduction of high temperature stress by green net shade alleviate oxidative stress and augments the growth and vase life of gladiolus cut flower

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