scholarly journals Studies on the salt injury in rice plant : III Researches on the uptake of water, NaCl and the symptoms of salt injury in rice seedlings grown with culture solution of various concentrations of NaCl

1953 ◽  
Vol 21 (3-4) ◽  
pp. 245-246 ◽  
Author(s):  
Shikajuro IWAKI ◽  
Katsuichi OTA
Keyword(s):  
Rice Plant ◽  
Culture Solution ◽  
Rice Seedlings

scholarly journals Chlorosis of the rice plant induced by high pH of culture solution

1966 ◽  
Vol 12 (6) ◽  
pp. 7-13 ◽  
Author(s):  
A. Tanaka ◽  
S. A. Navasero
Keyword(s):  
Rice Plant ◽  
Culture Solution ◽  
High Ph

Interactions of rice seedlings with bacteria isolated from rice roots

1999 ◽  
Vol 26 (6) ◽  
pp. 521 ◽  
Author(s):  
J. Prayitno ◽  
J. Stefaniak ◽  
J. McIver ◽  
J. J. Weinman ◽  
F. B. Dazzo ◽  
...  
Keyword(s):  
Plant Growth ◽  
Rice Plant ◽  
Lateral Roots ◽  
Growth Conditions ◽  
The Philippines ◽  
Rice Cultivars ◽  
Rice Seedlings ◽  
Bacterial Strains ◽  
Pressure Infiltration ◽  
Rice Leaves

The interactions between two groups of rice endophytic bacterial strains and several rice cultivars were investigated. Various strains of Rhizobium leguminosarum bv. trifolii, originally isolated from rice plants grown in Egypt, comprise one group. The second group of bacterial strains was isolated from rice cultivars grown in the Philippines. Inoculation experiments with rice seedlings showed that specific isolates of these rice-associating bacteria could either promote, inhibit, or have no influence on rice plant growth. Furthermore, these growth effects were greatly influenced by the environmental growth conditions used. Studies to examine root colonisation patterns, using Rhizobium strains into which a plasmid expressing the green fluorescent protein has been placed, showed that the bacteria preferentially colonise rice seedling surfaces mainly in clumps. This occurs along grooves on the rice root surface, or at the emerging lateral root zones and at the root tips. However, rhizobia could also colonise intercellularly in lateral roots formed on the main roots near the culm region of the seedling. Under the growth conditions used, this occurred most frequently with strain R4 which multiplied and migrated to form long lines of individual bacterial cells along the inside of growing lateral roots. A bioassay to measure bacterial multiplication in rice leaves showed that the rice-associating strains can multiply and survive at different rates within these tissues. They were not, however, detected migrating into other parts of the leaf from the original site of pressure-infiltration, indicating that the bacterial ability to migrate within the lateral roots is not matched by a similar capacity in rice leaves. We suggest that some of these rice-associating bacteria possess important genes that enhance their ability to intimately colonise niches on and within rice tissues, and promote rice plant growth.

scholarly journals Effect of Nitrogen Composition in Culture Solution on the Growth of Rice Seedlings Raised on a Cotton Mat Spread on Hydroponic Apparatus for Vegetables.

2001 ◽  
Vol 70 (3) ◽  
pp. 359-364 ◽  
Author(s):  
Hiroshi EHARA ◽  
Osamu MORITA ◽  
Chie MORIMOTO ◽  
Mizue KAWASHIMA ◽  
Masaru SUEMATSU
Keyword(s):  
Culture Solution ◽  
Rice Seedlings

Localization of acid phosphatases in root cap of rice plant

1991 ◽  
Vol 49 ◽  
pp. 224-225
Author(s):  
Y. R. Chen ◽  
Y. F. Huang ◽  
W. S. Chen
Keyword(s):  
Rice Plant ◽  
Developmental Stages ◽  
Uranyl Acetate ◽  
Root Cap ◽  
Plant Tissues ◽  
Acid Phosphatases ◽  
Root Tips ◽  
Buffer Solution ◽  
Cacodylate Buffer ◽  
Ethanol Series

Acid phosphatases are widely distributed in different tisssues of various plants. Studies on subcellular localization of acid phosphatases show they might be present in cell wall, plasma lemma, mitochondria, plastid, vacuole and nucleus. However, their localization in rice cell varies with developmental stages of cells and plant tissues. In present study, acid phosphatases occurring in root cap are examined.Sliced root tips of ten-day-old rice(Oryza sativa) seedlings were fixed in 0.1M cacodylate buffer containing 2.5% glutaraldehyde for 2h, washed overnight in same buffer solution, incubated in Gomori's solution at 37° C for 90min, post-fixed in OsO4, dehydrated in ethanol series and finally embeded in Spurr's resin. Sections were doubly stained with uranyl acetate and lead citrate, and observed under Hitachi H-600 at 75 KV.

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