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1

Leaf nitrogen and phosphorus stoichiometry of plants from natural and restorable communities at lands used for Qinghai-Tibet Highway Construction, China

100%
Luo M. W., Mao L., Guo Z. G.
Polish Journal of Ecology
|
2014
|
tom 62
|
nr 2
Highway network construction is one of common factors contributing to alpine grassland degradation in the Qinghai-Tibet Plateau as well as other regions, resulting in big area land used for highway construction by abruptly removing the vegetation and topsoil on both sides of roadbed. Taking the Land Used for Qinghai-Tibet Highway Construction (LUQHC) produced in 1994 as an example, a field survey was conducted to investigate the leaf N, P stoichiometry of plants from natural communities and restorable communities by using all plants and same pairwise of species, because the natural vegetation restoration at LUQHC is driven by element availability to some extent. This study showed that plants were probably P-limited in study region and the variation of N:P ratio was closely related to leaf P concentration. Results of same pairwise of species showed that the leaf N, P and N:P ratio of plants from restorable communities were higher than those of adjacent natural communities, indicating that leaf N and P were simultaneously affected by the environment circumstance of LUQHC. However, results of all species showed that the environment factors only impacted on leaf N concentration. These showed that the plant in restorable communities suffered from more intense P-limited conditions than those in natural communities, and that the same pairwise of species sampling was better to acquire the N- or P-limitation status for plant in restorable communities than all species. This study also showed that phylogenetic variation (family and genus identity) was key factor affecting the variations of N, P stoichiometry.
2

The possible role of BAX and BI-1 genes in chilling-induced cell death in cucumber fruit

88%
Zhao Y., Chen J., Tao X., Zheng X., Mao L.
Acta Physiologiae Plantarum
|
2014
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tom 36
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nr 06
The aim of the present study was to investigate the possible role of BAX and BI-1 genes in chilling injury of cucumber fruit. BAX and BI-1 gene expressions were assayed under 2 ± 1°C. Meanwhile, cell death, cellular integrity, specific chromatin fragmentation and nucleus morphology in cucumber (Cucumis sativus L. cv. Zhexiu1) fruits were determined. Results indicated that BAX and BI-1 genes were activated by low temperature and the expression level of the BAX was much higher than BI-1. At the same time, electrolyte leakage and cell death were increased coupled with nuclear envelope disassembly and DNA fragmentation during the occurrence of chilling injury. In addition, characteristic features of programmed cell death were induced as well as the initiation of chilling injury. The interaction of BAX and BI-1 might predetermine the cell life or death in response to cold stimulus.
3

Exogenous sucrose treatment accelerates postharvest tomato fruit ripening through the influence on its metabolism and enhancing ethylene biosynthesis and signaling

76%
Li D., Mou W., Wang Y., Li L., Mao L., Ying T., Luo Z.
Acta Physiologiae Plantarum
|
2016
|
tom 38
|
nr 09
4

Detachment-accelerated ripening and senescence of strawberry (Fragaria x ananassa Duch. cv. Akihime) fruit and the regulation role of multiple phytohormones

76%
Chen J., Mao L., Mi H., Zhao Y., Ying T., Luo Z.
Acta Physiologiae Plantarum
|
2014
|
tom 36
|
nr 09
To study the detachment stress on the ripeness of strawberry fruit, physiological characteristics of strawberry fruit on and off plant during ripeness and senescence processes were investigated. The results indicated that the ripeness of strawberry fruit upon detachment was accelerated, in terms of firmness, soluble solid content and especially color development. The color of fruit off plant changed rapidly from white to full red in 1–2 days. The respiratory rate in fruit off plant was strengthened, higher than that on plant. Abscisic acid level and ethylene production in fruit off plant were also higher than those on plant and auxin degradation was exacerbated by detachment. Expression levels of FaMYB1, FabHLH3 and FaTTG1 were generally reduced with phenotypes of redder color and more anthocyanin accumulation in fruit off plant. Results also suggested that the detachment initially stimulated ethylene and abscisic acid production and auxin degradation, which modulated ripening-related gene expression and at last enhanced fruit pigmentation.
5

Impact of packaging materials on bruise damage in kiwifruit during free drop test

76%
Xia M., Zhao X., Wei X., Guan W., Wei X., Xu C., Mao L.
Acta Physiologiae Plantarum
|
2020
|
tom 42
|
nr 07
6

Interaction of abscisic acid and auxin on gene expression involved in banana ripening

76%
Lu W., Mao L., Chen J., Han X., Ren X., Ying T., Luo Z.
Acta Physiologiae Plantarum
|
2018
|
tom 40
|
nr 03
7

What determines the change of lakes in large cities under climate change and anthropogenic activities? Evidence from Eastern China

64%
Wang H., Mao L., Lu S., Ying J., Jiang Q., Yuan R., Liu X., Wang M., Zhao D.
Polish Journal of Environmental Studies
|
2019
|
tom 28
|
nr 3
Lakes are one of the most important wetland types on the earth with many ecosystem functions. With continuing economic growth and climate change, lake abundance and surface areas throughout the world have been threatened by many factors, including by human and environmental disruptions. However, we still have limited knowledge on how human activities and climate change affect lake reductions and associated ecosystem services. Elucidating the underlying mechanisms of lake shrinkage will help maintain an ecological balance in urban planning, especially in rapidly developing countries. We explore the determinants of lake shrinkage and abundance reduction from the 1980s to the 2010s using remote sensing data of lakes in two large cities in eastern China: Nanchang and Shanghai. In order to account for the non-independence of time-series data, time series auto-regressive generalized least squares (GLS) models were used to examine the relationship between lake area/abundance and human activities and climate change. Our results show that human activities rather than climate change, are the most important determinants for the areas and numbers of lake shrinkage, and gross domestic product (GDP) and population size could explain more than half of the variation in the number and area of lakes with areas larger than 20 ha in the two cities. GDP and lake area shrinkage do not exhibit a linear relationship. This highlights the importance of wetland protection in the early development stage. Because the main determinants are human activities, cities have the ability to protect wetlands via suitable planning.
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