Effects of Salinity Stress on the Seminal Root Tip Ultrastructures of Rice Seedlings (Oryza sativa L.)
Growth and structural changes in the seminal root tip of rice seedlings (Oryza sativa L. cv. Nipponbare) in response to NaCl salinity were studied. Seedlings were grown in agar medium with 0, 0.1, 0.3, 1.0, 2.0 and 3.0% NaCl(agar culture), and in water with 0, 0.01, 0.03, 0.06 and 0.1% NaCl (water c...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2001-01-01
|
| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1626/pps.4.103 |
| _version_ | 1819149225927114752 |
|---|---|
| author | Shahidur Rahman Tomomi Matsumuro Hiroshi Miyake Yoji Takeoka |
| author_facet | Shahidur Rahman Tomomi Matsumuro Hiroshi Miyake Yoji Takeoka |
| author_sort | Shahidur Rahman |
| collection | DOAJ |
| description | Growth and structural changes in the seminal root tip of rice seedlings (Oryza sativa L. cv. Nipponbare) in response to NaCl salinity were studied. Seedlings were grown in agar medium with 0, 0.1, 0.3, 1.0, 2.0 and 3.0% NaCl(agar culture), and in water with 0, 0.01, 0.03, 0.06 and 0.1% NaCl (water culture). Seedling growth was significantly suppressed by higher concentrations of NaCl. The effect of NaCl appeared faster in water culture than in agar culture. In both agar and water cultures, root growth was markedly suppressed over shoot growth. Under saline conditions, epidermis, cortex and root cap cells appear to be damaged to a greater extent than the meristem and stelar cells. The most notable ultrastructural change in response to salinity was the development and increment of vacuoles, which seem to provide a space for accumulation of excess ions. Many electron dense deposits were observed in the larger vacuoles of the epidermal and cortical cells. Under saline conditions, cell wall thickening of the epidermis, an increase in endoplasmic reticulum, myelin figures, less compact Golgi bodies and inhibited production of Golgi vesicles were also observed. |
| first_indexed | 2024-12-22T13:58:14Z |
| format | Article |
| id | doaj.art-e82344508f2c46b7a87c6c7a3df51b0f |
| institution | Directory Open Access Journal |
| issn | 1343-943X 1349-1008 |
| language | English |
| last_indexed | 2024-12-22T13:58:14Z |
| publishDate | 2001-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj.art-e82344508f2c46b7a87c6c7a3df51b0f2022-12-21T18:23:30ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082001-01-014210311110.1626/pps.4.10311644472Effects of Salinity Stress on the Seminal Root Tip Ultrastructures of Rice Seedlings (Oryza sativa L.)Shahidur Rahman0Tomomi Matsumuro1Hiroshi Miyake2Yoji Takeoka3Nagoya UniversityNagoya UniversityNagoya UniversityNagoya UniversityGrowth and structural changes in the seminal root tip of rice seedlings (Oryza sativa L. cv. Nipponbare) in response to NaCl salinity were studied. Seedlings were grown in agar medium with 0, 0.1, 0.3, 1.0, 2.0 and 3.0% NaCl(agar culture), and in water with 0, 0.01, 0.03, 0.06 and 0.1% NaCl (water culture). Seedling growth was significantly suppressed by higher concentrations of NaCl. The effect of NaCl appeared faster in water culture than in agar culture. In both agar and water cultures, root growth was markedly suppressed over shoot growth. Under saline conditions, epidermis, cortex and root cap cells appear to be damaged to a greater extent than the meristem and stelar cells. The most notable ultrastructural change in response to salinity was the development and increment of vacuoles, which seem to provide a space for accumulation of excess ions. Many electron dense deposits were observed in the larger vacuoles of the epidermal and cortical cells. Under saline conditions, cell wall thickening of the epidermis, an increase in endoplasmic reticulum, myelin figures, less compact Golgi bodies and inhibited production of Golgi vesicles were also observed.http://dx.doi.org/10.1626/pps.4.103GrowthOryza sativa L.,Root tipSalinityTransmission electron microscopy (TEM)UltrastructureVacuole |
| spellingShingle | Shahidur Rahman Tomomi Matsumuro Hiroshi Miyake Yoji Takeoka Effects of Salinity Stress on the Seminal Root Tip Ultrastructures of Rice Seedlings (Oryza sativa L.) Plant Production Science Growth Oryza sativa L., Root tip Salinity Transmission electron microscopy (TEM) Ultrastructure Vacuole |
| title | Effects of Salinity Stress on the Seminal Root Tip Ultrastructures of Rice Seedlings (Oryza sativa L.) |
| title_full | Effects of Salinity Stress on the Seminal Root Tip Ultrastructures of Rice Seedlings (Oryza sativa L.) |
| title_fullStr | Effects of Salinity Stress on the Seminal Root Tip Ultrastructures of Rice Seedlings (Oryza sativa L.) |
| title_full_unstemmed | Effects of Salinity Stress on the Seminal Root Tip Ultrastructures of Rice Seedlings (Oryza sativa L.) |
| title_short | Effects of Salinity Stress on the Seminal Root Tip Ultrastructures of Rice Seedlings (Oryza sativa L.) |
| title_sort | effects of salinity stress on the seminal root tip ultrastructures of rice seedlings oryza sativa l |
| topic | Growth Oryza sativa L., Root tip Salinity Transmission electron microscopy (TEM) Ultrastructure Vacuole |
| url | http://dx.doi.org/10.1626/pps.4.103 |
| work_keys_str_mv | AT shahidurrahman effectsofsalinitystressontheseminalroottipultrastructuresofriceseedlingsoryzasatival AT tomomimatsumuro effectsofsalinitystressontheseminalroottipultrastructuresofriceseedlingsoryzasatival AT hiroshimiyake effectsofsalinitystressontheseminalroottipultrastructuresofriceseedlingsoryzasatival AT yojitakeoka effectsofsalinitystressontheseminalroottipultrastructuresofriceseedlingsoryzasatival |