Photosystem 2 photochemistry and pigment composition of a yellow mutant of rice (Oryza sativa L.) under different irradiances

Chen, Q.; Wang, L. F.; Su, Ning; Qin, Huaide; Niu, Huifeng; Wang, J. L.; Zhai, Huan-Chen; Wan, Jianmin

doi:10.1007/s11099-008-0007-y

Cited by 11 publications

(11 citation statements)

References 22 publications

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“…It was evident from the decrease of the proportion of light energy used for photochemistry and the increase of the proportion of excess light energy under the LL condition. Our results corroborated the conclusions of earlier investigations (Krause 1988, Chow et al1990, Lee et al 1999, Souza et al 2004, Chen and Cheng 2007, Chen et al 2008.…”

Section: Parameterssupporting

confidence: 93%

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

Fu¹,

Zhao²,

Wang³

et al. 2010

Photosynt.

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The mechanisms of capsicum growth in response to differential light availabilities are still not well elucidated. Hereby, we analyzed differential light availabilities on the relationship between stomatal characters and leaf growth, as well as photosynthetic performance. We used either 450-500 μmol m -2 s -1 as high light (HL) or 80-100 μmol m -2 s -1 as low light (LL) as treatments for two different cultivars. Our results showed that the stomatal density (SD) and stomatal index (SI) increased along with the leaf area expansion until the peak of the correlation curve, and then decreased. SD and SI were lower under the LL condition after three days of leaf expansion. For both cultivars, downregulation of photosynthesis and electron transport components was observed in LL-grown plants as indicated by lower light-and CO 2 -saturated photosynthetic rate (P max and RuBP max ), quantum efficiency of photosystem II (PSII) photochemistry (Φ PSII ), electron transport rate (ETR) and photochemical quenching of fluorescence (q p ). The observed inhibition of the photosynthesis could be explained by the decrease of SD, SI, Rubisco content and by the changes of the chloroplast. The low light resulted in lower total biomass, root/shoot ratio, and the thickness of the leaf decreased. However, the specific leaf area (SLA) and the content of leaf pigments were higher in LL-treatment. Variations in the photosynthetic characteristics of capsicum grown under different light conditions reflected the physiological adaptations to the changing light environments.

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Section: Parameterssupporting

confidence: 93%

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

Fu¹,

Zhao²,

Wang³

et al. 2010

Photosynt.

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“…A Chl-deficient rice mutant showed a lower photon absorption rate, and a stronger xanthophyll cycle capacity and a lower degree of photoinhibition (Dai et al 2003). On the other hand, some Chl-deficient rice mutants displayed a higher degree of photoinhibition, either having lower abilities of thermo-dissipation and antioxidative protection (Goh et al 2009) or a higher level of de-epoxidation states of xanthophylls (Chen et al 2008). The results of the present study indicated that, although vegetables used in this study are of either temperate or tropical origin and include C 3 and C 4 plants, 4 yellow-green cultivars showed the same tendency on changes in energy dissipation and photoinhibition (Figs.…”

Section: Discussionmentioning

confidence: 99%

“…It has been reported that several Chl mutants could change their efficiency of energy dissipation and antioxidative protection in order to adapt to high irradiance , Štroch et al 2004, Chen et al 2008, Goh et al 2009). …”

Section: Discussionmentioning

confidence: 99%

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A comparison between yellow-green and green cultivars of four vegetable species in pigments, ascorbate, photosynthesis, energy dissipation, and photoinhibition

Weng¹,

Chien²,

Jiang³

et al. 2011

Photosynt.

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Yellow-green foliage cultivars of four vegetables grown outdoors, i.e., Chinese mustard (Brassica rapa), Chinese kale (Brassica oleracea var. alboglabra), sweet potato (Ipomoea batatas) and Chinese amaranth (Amaranthus tricolor), had lower chlorophyll (Chl) (a+b) (29-36% of green cultivars of the same species), total carotenoids (46-62%) and ascorbate (72-90%) contents per leaf area. Furthermore, yellow-green cultivars had smaller photosystem II (PSII) antenna size (65-70%) and lower photosynthetic capacity (52-63%), but higher Chl a/b (107-156%) and from low (60%) to high (129%) ratios of de-epoxidized xanthophyll cycle pigments per Chl a content. Potential quantum efficiency of PSII (F(v)/F(m)) of all overnight dark-adapted leaves was ca. 0.8, with no significant difference between yellow-green and green cultivars of the same species. However, yellow-green cultivars displayed a higher degree of photoinhibition (lower F(v)/F(m) after illumination) when they were exposed to high irradiance. Although vegetables used in this study are of either temperate or tropical origin and include both C(3) and C(4) plants, data from all cultivars combined revealed that F(v)/F(m) after illumination still showed a significant positive linear regression with xanthophyll cycle-dependent energy quenching (q(E)) and a negative linear regression with photoinhibitory quenching (q(I)). F(v)/F(m) was, however, not correlated with nonphotochemical quenching (NPQ). Yet, a higher degree of photoinhibition in yellow-green cultivars could recover during the night darkness period, suggesting that the repair of PSII in yellow-green cultivars would allow them to grow normally in the field

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“…We used a scanning electron microscope (S-3400N, Hitachi, Japan) to observe the arrangement trichomes on our C. korshinskii leaf samples. According to methods outlined by Chen et al (2008), leaf samples (5 mm 9 5 mm) were fixed in 4% glutaraldehyde at 4°C for over 6 h, and then washed three times with 0.1 M phosphate buffer solution for 10 min. The samples were then transferred into 1% osmic acid at 4°C for 2 h and washed three times with 0.1 M phosphate buffer solution for 10 min.…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Adaptional evolution of trichome in Caragana korshinskii to natural drought stress on the Loess Plateau, China

Ning

Wang

Zhou

et al. 2016

Ecology and Evolution

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Caragana korshinskii is commonly employed to improve drought ecosystems on the Loess Plateau, although the molecular mechanism at work is poorly understood, particularly in terms of the plant's ability to tolerate drought stress. Water is the most severe limiting factor for plant growth on the Loess Plateau. The trichome is known to play an efficient role in reducing water loss through decreasing the rate of transpiration, so in this study, we focused on the trichome‐related gene expression of ecological adaptation in C. korshinskii under low precipitation conditions. In order to explore the responses of trichomes to drought, we selected two experimental sites from wet to dry along the Loess Plateau latitude gradient for observation. Micro‐phenomena through which trichomes grew denser and larger under reduced precipitation were observed using a scanning electron microscope; de novo transcriptomes and quantitative PCR were then used to explore and verify gene expression patterns of C. korshinskii trichomes. Results showed that GIS2,TTG1, and GL2 were upregulated (as key positive‐regulated genes on trichome development), while CPC was downregulated (negative‐regulated gene). Taken together, our data indicate that downstream genes of gibberellin and cytokinin signaling pathways, alongside several cytoskeleton‐related genes, contribute to modulating trichome development to enhance transpiration resistance ability and increase the resistance to drought stress in C. korshinskii.

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Photosystem 2 photochemistry and pigment composition of a yellow mutant of rice (Oryza sativa L.) under different irradiances

Cited by 11 publications

References 22 publications

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

A comparison between yellow-green and green cultivars of four vegetable species in pigments, ascorbate, photosynthesis, energy dissipation, and photoinhibition

Adaptional evolution of trichome in Caragana korshinskii to natural drought stress on the Loess Plateau, China

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