Influence of Drought Stress and Rehydration on Moisture and Photosynthetic Physiological Changes in Three Epilithic Moss Species in Areas of Karst Rocky Desertification
The drought resistance mechanism of typical mosses in the karst area was studied, and the water and photosynthetic physiological adaptation of mosses to karst environmental change was analyzed in this paper, which provided the basis for the restoration and control of karst rocky desertification ecol...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2021/4944012 |
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| author | Chunlei Cong Tianlei Liu Xianqiang Zhang |
| author_facet | Chunlei Cong Tianlei Liu Xianqiang Zhang |
| author_sort | Chunlei Cong |
| collection | DOAJ |
| description | The drought resistance mechanism of typical mosses in the karst area was studied, and the water and photosynthetic physiological adaptation of mosses to karst environmental change was analyzed in this paper, which provided the basis for the restoration and control of karst rocky desertification ecological environment. Three superior plants in the rocky desertification area of Guizhou province were selected; they are, respectively, Erythrodontium julaceum (Schwaegr.) Par., Barbula unguiculata Hedw., and Bryum argenteum Hedw. Results show that the three kinds of plant rock mosses of leaf water potential (Ψs), free water content (Va), total water content, and relative water content (RWC) decreased; bound water (Vs), water saturation deficit (WSD), and Vs/Va ratio increased; transpiration rate (Tr) fell slightly, under drought stress. The physiological indexes of water have different degrees of recovery after rehydration. The total chlorophyll content shows a trend of first increasing followed by falling and then rising. RWC was negatively related to qN and positively related to Fv/Fm, yield, ETR, and qP. After rewetting, the fluorescence parameters are returned to average level under mild-to-moderate stress. At the same time, it is hard to get back to the control level under severe pressure. The water use efficiency (WUE) decreased with stress and recovered to different degrees after rehydration. |
| format | Article |
| id | doaj-art-88d46739ebeb4653aac647cfd4b0ef60 |
| institution | Kabale University |
| issn | 2090-9071 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-88d46739ebeb4653aac647cfd4b0ef602025-02-03T01:26:54ZengWileyJournal of Chemistry2090-90712021-01-01202110.1155/2021/4944012Influence of Drought Stress and Rehydration on Moisture and Photosynthetic Physiological Changes in Three Epilithic Moss Species in Areas of Karst Rocky DesertificationChunlei Cong0Tianlei Liu1Xianqiang Zhang2Anshun UniversityAnshun UniversityGuizhou Police CollegeThe drought resistance mechanism of typical mosses in the karst area was studied, and the water and photosynthetic physiological adaptation of mosses to karst environmental change was analyzed in this paper, which provided the basis for the restoration and control of karst rocky desertification ecological environment. Three superior plants in the rocky desertification area of Guizhou province were selected; they are, respectively, Erythrodontium julaceum (Schwaegr.) Par., Barbula unguiculata Hedw., and Bryum argenteum Hedw. Results show that the three kinds of plant rock mosses of leaf water potential (Ψs), free water content (Va), total water content, and relative water content (RWC) decreased; bound water (Vs), water saturation deficit (WSD), and Vs/Va ratio increased; transpiration rate (Tr) fell slightly, under drought stress. The physiological indexes of water have different degrees of recovery after rehydration. The total chlorophyll content shows a trend of first increasing followed by falling and then rising. RWC was negatively related to qN and positively related to Fv/Fm, yield, ETR, and qP. After rewetting, the fluorescence parameters are returned to average level under mild-to-moderate stress. At the same time, it is hard to get back to the control level under severe pressure. The water use efficiency (WUE) decreased with stress and recovered to different degrees after rehydration.http://dx.doi.org/10.1155/2021/4944012 |
| spellingShingle | Chunlei Cong Tianlei Liu Xianqiang Zhang Influence of Drought Stress and Rehydration on Moisture and Photosynthetic Physiological Changes in Three Epilithic Moss Species in Areas of Karst Rocky Desertification Journal of Chemistry |
| title | Influence of Drought Stress and Rehydration on Moisture and Photosynthetic Physiological Changes in Three Epilithic Moss Species in Areas of Karst Rocky Desertification |
| title_full | Influence of Drought Stress and Rehydration on Moisture and Photosynthetic Physiological Changes in Three Epilithic Moss Species in Areas of Karst Rocky Desertification |
| title_fullStr | Influence of Drought Stress and Rehydration on Moisture and Photosynthetic Physiological Changes in Three Epilithic Moss Species in Areas of Karst Rocky Desertification |
| title_full_unstemmed | Influence of Drought Stress and Rehydration on Moisture and Photosynthetic Physiological Changes in Three Epilithic Moss Species in Areas of Karst Rocky Desertification |
| title_short | Influence of Drought Stress and Rehydration on Moisture and Photosynthetic Physiological Changes in Three Epilithic Moss Species in Areas of Karst Rocky Desertification |
| title_sort | influence of drought stress and rehydration on moisture and photosynthetic physiological changes in three epilithic moss species in areas of karst rocky desertification |
| url | http://dx.doi.org/10.1155/2021/4944012 |
| work_keys_str_mv | AT chunleicong influenceofdroughtstressandrehydrationonmoistureandphotosyntheticphysiologicalchangesinthreeepilithicmossspeciesinareasofkarstrockydesertification AT tianleiliu influenceofdroughtstressandrehydrationonmoistureandphotosyntheticphysiologicalchangesinthreeepilithicmossspeciesinareasofkarstrockydesertification AT xianqiangzhang influenceofdroughtstressandrehydrationonmoistureandphotosyntheticphysiologicalchangesinthreeepilithicmossspeciesinareasofkarstrockydesertification |