Photosystem 2 activities of hyper-accumulator Dicranopteris dichotoma Bernh from a light rare earth elements mine

Wang, L.F.; He, Jianing; Bai, K. Z.; Li, L. B.; Kuang, Tingyun

doi:10.1007/s11099-006-0007-8

Cited by 18 publications

(14 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Electron microscopy was done according to Wang et al (2006). The intact leaves were thoroughly rinsed with tap water and distilled water, and then dried with filter paper.…”

Section: Sds-page Electrophoresismentioning

confidence: 99%

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

Chen¹,

Wang²,

Su³

et al. 2008

Photosynt.

View full text Add to dashboard Cite

A yellow leaf colouration mutant (named ycm) generated from rice T-DNA insertion lines was identified with less grana lamellae and low thylakoid membrane protein contents. At weak irradiance [50 μmol(photon) m -2 s -1 ], chlorophyll (Chl) contents of ycm were ≈20 % of those of WT and Chl a/b ratios were 3-fold that of wild type (WT). The leaf of ycm showed lower values in the actual photosystem 2 (PS2) efficiency (Φ PS2 ), photochemical quenching (q P ), and the efficiency of excitation capture by open PS2 centres 1 (F v '⁄F m ') than those of WT, except no difference in the maximal efficiency of PS2 photochemistry (F v /F m ). With progress in irradiance [100 and 200 μmol(photon) m -2 s -1 ], there was a change in the photosynthetic pigment stoichiometry. In ycm, the increase of total Chl contents and the decrease in Chl a/b ratio were observed. Φ PS2 , q P , and F v '⁄F m ' of ycm increased gradually along with the increase of irradiance but still much less than in WT. The increase of xanthophyll ratio [(Z+A)/(V+A+Z)] associated with non-photochemical quenching (q N ) was found in ycm which suggested that ycm dissipated excess energy through the turnover of xanthophylls. No significant differences in pigment composition were observed in WT under various irradiances, except Chl a/b ratio that gradually decreased. Hence the ycm mutant developed much more tardily than WT, which was caused by low photon energy utilization independent of irradiance.Additional key words: β-carotene; chlorophyll; photochemical and non-photochemical quenching; xanthophyll cycle.

show abstract

“…Electron microscopy was done according to Wang et al (2006). The intact leaves were thoroughly rinsed with tap water and distilled water, and then dried with filter paper.…”

Section: Sds-page Electrophoresismentioning

confidence: 99%

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

Chen¹,

Wang²,

Su³

et al. 2008

Photosynt.

View full text Add to dashboard Cite

show abstract

“…Microscopic and super-microscopic observations were carried out as described by Wang et al [20] using an optical microscope (Nikon Eclipse E400, Japan) and a transmission electron microscope (TEM, JEM1230, Tokyo, Japan). The experimental data were analyzed by SAS statistical software (ver.…”

Section: Methodsmentioning

confidence: 99%

Features of the photosynthetic tissue in the sheaths of rice (Oryza sativaL.)

Guo

Feng

2013

PIAGENG 2013: Intelligent Information, Control, and Communication Technology for Agricultural Engineering

View full text Add to dashboard Cite

The photosynthesis of rice sheath plays a significant role to furnish rice yield, and it is accounted for 10 to 20% of the final yield. But, limited studies have been done to address this phenomenon and to characterize the features of the photosynthetic tissue in rice sheath. In this paper, a super hybrid rice and a hybrid rice were studied as the experimental materials, and the characteristics of the photosynthetic tissue in rice sheaths were examined by microscopic and super-microscopic observation. The results showed that the photosynthetic tissue of rice sheath was rich in the intact mesophyllous cells full of chloroplasts, grana and thylakoids, which were much the same as those of rice blade. The stomatal density in the outer epidermises of the sheaths was comparable to those in the up-and down-epidermises of the blades. The mesophyllous cells in the sheaths were also rich in chlorophylls, and had the net photosynthetic rate (P n ). Therefore, rice sheath was also full of the intact photosynthetic apparatus similar to those in rice blade, and had capabilities of photosynthesis.

show abstract

“…The extract was measured spectrophotometrically at 475, 645, and 663 nm. Specific chlorophyll contents and total chlorophyll were determined according to the method of Wang et al (2006).…”

Section: Duckweeds Cultivation and Measurement Of Chlorophyll Contentsmentioning

confidence: 99%

Leaching patterns of fipronil in 3 kinds of soil in Hainan province, China

Yu¹,

Wang²,

Ya-jun³

et al. 2013

Afr. J. Agric. Res.

View full text Add to dashboard Cite

Fipronil, an insecticide for crop protection with good selectivity between insects and mammals, are toxic to plants and animals in wild. In this paper, the decay patterns of Fipronil in 3 kinds of arable layer soil in Hainan province were studied by means of simulated rain water leaching use tap water on the earthworms and duckweeds, respectively. The results showed that decays of Fipronil in different soils were high related with organic matter content in soil. The death rates of earthworms were 10% in up layer of clay loam (rice land) which organic matter content was 14.84 g/kg. After leaching for 14 days, Fipronil flowed into lower layer, death rates of earthworms was increased to 24%. The decreasing of death rate of earthworms were found in lower layer of three soils suggested that little Fipronil flowed into lower soils. Leaching water collected at 1 h from three soils was poisoned to cultured duckweeds which reduce chlorophyll contents and the maximal efficiency of PSII photochemistry (Fv/Fm). These studies confirmed that Fipronil was combined with organic matter at surface soil. It could not decay easily in field and will influence the crop which planted in Hainan province for long periods.

show abstract

Photosystem 2 activities of hyper-accumulator Dicranopteris dichotoma Bernh from a light rare earth elements mine

Cited by 18 publications

References 27 publications

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

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

Features of the photosynthetic tissue in the sheaths of rice (Oryza sativaL.)

Leaching patterns of fipronil in 3 kinds of soil in Hainan province, China

Contact Info

Product

Resources

About