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Application analysis of the ecological value of agricultural lands in the upper Yongding River Basin

100%

Zang W., Fu Y., Zhang J., Shi W., Qian Z., Guo W., Liu L.

Polish Journal of Environmental Studies

2019

tom 28

nr 2

The value of agro-ecosystem services is closely related to crop yield. As a production input component in an agro-ecosystem, agro-ecosystem services have practical value. It is generally believed that agro-ecosystem services are substitutes for purchase investment and can decrease agricultural production costs. Crop yield increases may negatively affect agro-ecosystem protection, and conversely, agro-ecosystem protection may result in crop yield reductions. Based on the established production model of agro-ecosystems, we determined the reasonable substitutive conditions and production outputs, and we quantitatively studied the ratio of the land area for agricultural production to that for ecosystem services. With the upper Yongding River Basin in China as the study area, we calculated agricultural yield elasticity and concluded that the corresponding crop yield would be reduced by 2.7% when the land area for ecosystem services in the basin increased by 1.0%. At present, the ecological service value of the Yongding River Basin showed an increasing trend.

The miR-1204 regulates apoptosis in NSCLC cells by targeting DEK

100%

Qian Z., Yang J., Liu H., Yin Y., Hou L., Hu H.

Folia Histochemica et Cytobiologica

2019

tom 57

nr 2

Expression of the zga agglutinin gene in tobacco can enhance its anti-pest ability for peach-potato aphid (Myzus persica)

84%

Zhou C., Qian Z., Ji Q., Xu H., Chen L., Luo X., Min L., Tang K., Xiao J., Kai G.

Acta Physiologiae Plantarum

2011

tom 33

nr 5

The effect of introduction of the Zephyranthes grandiflora agglutinin gene (zga) to tobacco on its anti-pest ability for peach-potato aphids was investigated. PCR analysis confirmed that the zga gene was integrated into the plant genome. The results from semi-quantitative RT-PCR and real-time PCR assays revealed that the zga gene was expressed at various levels in the transgenic plants. A bioassay with aphids indicated that transgenic plants conferred enhanced resistance to aphids. Compared with the controls, the average number of aphids fed with transgenic plants during a 20-day assay evidently decreased by 70.4% in leaf disc bioassay and 77.9% in whole plant bioassay. The average number of nymph was significantly reduced by 36.4% on zga-expressing plants in leaf disc bioassay and 35.6% in whole plant bioassay. The report indicated that the introduction of zga gene to tobacco plants is a useful method to improve its anti-pest ability for aphids.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Folia Histochemica et Cytobiologica

1 Polish Journal of Environmental Studies

3 Qian Z.

1 Chen L.

1 Fu Y.

1 Guo W.

1 Hou L.

1 Hu H.

1 Ji Q.

1 Kai G.

1 Liu H.

1 Liu L.

1 Luo X.

1 Min L.

1 Shi W.

1 Tang K.

1 Xiao J.

1 Xu H.

1 Yang J.

1 Yin Y.

1 Zang W.

1 Zhang J.

1 Zhou C.

2 2019

1 2011

Wyniki wyszukiwania

Application analysis of the ecological value of agricultural lands in the upper Yongding River Basin

The miR-1204 regulates apoptosis in NSCLC cells by targeting DEK

Expression of the zga agglutinin gene in tobacco can enhance its anti-pest ability for peach-potato aphid (Myzus persica)