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Studying the urban heat island using a local climate zone scheme

100%

Wang Z., Xing W., Huang Y., Xie T.

Polish Journal of Environmental Studies

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2016

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tom 25

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nr 6

With rapid urbanization and the rise of climate change awareness, policy makers and urban planners are seeking methods and schemes that consider the urban heat island (UHI) effect. In order to investigateto what extent a homogeneous urban fabric leads to a specific thermal pattern, a local climate zone (LCZ) scheme was utilized and classification has been applied in the urban areas of Chongqing. Urban indicators were calculated to match LCZ types of measurement points. Using a mobile measurement approach, we analyzed screen-height air temperature distribution inside local climate zones in both spring and summer. An apparent seasonal difference inside LCZs was found, with air temperature amplitude about 0.8ºC in spring and 0.9ºC in summer. The average air temperature difference in LCZ 1 was 2.9ºC between the two seasons, while in LCZ H this difference was as high as 3.5ºC. The reasons why LCZ H had relatively high air temperature were explained and further investigation of UHI using LCZ scheme was proposed.

2

Associated growth of C3 and C4 desert plants helps the C3 species at the cost of the C4 species

88%

Su P., Yan Q., Xie T., Zhou Z., Gao S.

Acta Physiologiae Plantarum

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2012

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tom 34

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nr 6

C₃ desert plant Reaumuria soongorica (RS-C₃) and C₄ desert plant Salsola passerina (SP-C₄) may exist either in individual or in associated communities. Carbon isotope composition, leaf water potential, gas exchange and chlorophyll fluorescence characteristics of the individual and associated communities were compared with reveal, whether the associated growth represent an advantage under harsh habitat. The results showed that the δ¹³Cvalues of leaves ofRS-C₃ and SP-C₄ across different habitats fluctuated, respectively, from-24 to-27 ‰ and from-14 to-16 ‰. Leafwater potential of RS-C₃ was lower than SP-C₄ all day long, growing either individually or associated with the C₃ plant. When associated with the C₄ plant, the net photosynthetic rate of the RS-C₃ increased, and the photosynthetic rate of the partner SP-C₄ decreased. The transpiration rates of the associatedRS-C₃ and SP-C₄ were both lower than in their individual colonies. In associated communities, in RS-C₃, the maximal photochemical efficiency, the effective photochemical efficiency, the relative electron transport rate, the photochemical quenching of PS II increased, and the non-photochemical quenching of PS II decreased; all these parameters changed oppositely in the SP-C₄ plant.This shows that, in the associated community, the C₄ plants might facilitate adaptation of the RS-C₃, while SP-C₄ plant can adapt to the harsh environment through their own specialties. The association favored the expression of natural photosynthetic characteristics and survival of RS-C₃, while retarded the growth of SP-C₄. Associated growth decreases the transpiration rate of the whole community; it is conducive to improve its water use efficiency.

3

SOC1 and AGL24 interact with AGL18-1, not the other family members AGL18-2 and AGL18-3 in Brassica juncea

76%

Li C., Ma G., Xie T., Chen J., Wang Z., Song M., Tang Q.

Acta Physiologiae Plantarum

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2018

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tom 40

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nr 01

Many MCM1-AGAMOUS-DEFICIENS-SRF (MADS) genes have been proved to play an important role in the flowering time regulation of plants. The flowering-inhibiting factor AGAMOUS-LIKE 18 (AGL18) integrates into the two flowering-activating factors SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1) and AGAMOUS-LIKE 24 (AGL24), which play an important role during the plant developmental stages of the flowering pathway. However, it remains unknown whether and how the AGL18 protein directly interacts with SOC1 and/or AGL24 genes to regulate flowering time in Brassica juncea. In this study, three members (AGL18-1 in florescence, AGL18-2 and AGL18-3 in young seedlings) of the AGL18 family, and SOC1 and AGL24 in florescence were cloned in Brassica juncea. Yeast One-Hybrid assays and Dual-Glo® Luciferase assays showed that the SOC1 and AGL24 promoters interacted only with AGL18-1 protein, not AGL18-2 and AGL18-3. The typical conserved structure of the M-domain of AGL18-1 was the key region that mediated the interaction between the AGL18-1 protein and SOC1 promoter, and the I-domain, K-domain and C-domain did not regulate the interaction of AGL18-1/SOC1. In contrast, the K-domain and M-domain in AGL18-1 could mediate the interaction between the AGL18-1 protein and AGL24 promoter. This indicated that the AGL18-1 protein must have its unique functions that differed from AGL18-2 and AGL18-3. This work provides valuable information for in-depth studies into the molecular mechanisms of the AGL18 protein with SOC1 and AGL24 for flowering time control of Brassica juncea.

4

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A new basal actinopterygian fish from the Anisian (Middle Triassic) of Luoping, Yunnan Province, Southwest China

64%

Wen W., Zhang Q.-Y., Hu S.-X., Zhou C.-Y., Xie T., Huang J.-Y., Chen Z. Q., Benton M. J.

Acta Palaeontologica Polonica

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2012

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tom 57

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nr 1

The new neopterygian fish taxon Luoxiongichthys hyperdorsalis gen. et sp. nov. is established on the basis of five specimens from the second member of the Guanling Formation (Anisian, Middle Triassic) from Daaozi Quarry, Luoping, Yunnan Province, Southwest China. The new taxon is characterized by the following characters: triangular body outline with a distinct apex located between skull and dorsal fin; free maxilla; slender preopercular almost vertical; three suborbitals; at least eight strong branchiostegals with tubercles and comb−like ornamentation on the anterior margin; clavicles present; two postcleithra; ganoid scales covered by tubercles and pectinate ornamentation on the posterior margin with peg−and−socket structure; hemiheterocercal tail slightly forked. Comparison with basal actinopterygians reveals that the new taxon has parasemionotid−like triangular symplectics, but a semionotid opercular system. Cladistic analysis suggests that this new genus is a holostean, and either a basal halecomorph or basal semionotiform.

Ograniczanie wyników

2 Acta Physiologiae Plantarum

1 Acta Palaeontologica Polonica

1 Polish Journal of Environmental Studies

4 Xie T.

2 Wang Z.

1 Benton M. J.

1 Chen J.

1 Chen Z. Q.

1 Gao S.

1 Hu S.-X.

1 Huang J.-Y.

1 Huang Y.

1 Li C.

1 Ma G.

1 Song M.

1 Su P.

1 Tang Q.

1 Wen W.

1 Xing W.

1 Yan Q.

1 Zhang Q.-Y.

1 Zhou C.-Y.

1 Zhou Z.

1 2018

1 2016

2 2012

Studying the urban heat island using a local climate zone scheme

Associated growth of C3 and C4 desert plants helps the C3 species at the cost of the C4 species

SOC1 and AGL24 interact with AGL18-1, not the other family members AGL18-2 and AGL18-3 in Brassica juncea

A new basal actinopterygian fish from the Anisian (Middle Triassic) of Luoping, Yunnan Province, Southwest China