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81.
Koichi Yoneyama Xiaonan Xie Kaori Yoneyama Takahito Nomura Ikuo Takahashi Tadao Asami Narumi Mori Kohki Akiyama Miyuki Kusajima Hideo Nakashita 《Pest management science》2019,75(9):2353-2359
Strigolactones (SLs) are carotenoid‐derived plant secondary metabolites that play important roles in various aspects of plant growth and development as plant hormones, and in rhizosphere communications with symbiotic microbes and also root parasitic weeds. Therefore, sophisticated regulation of the biosynthesis, perception and functions of SLs is expected to promote symbiosis of beneficial microbes including arbuscular mycorrhizal (AM) fungi and also to retard parasitism by devastating root parasitic weeds. We have developed SL mimics with different skeletons, SL biosynthesis inhibitors acting at different biosynthetic steps, SL perception inhibitors that covalently bind to the SL receptor D14, and SL function inhibitors that bind to the serine residue at the catalytic site. In greenhouse pot tests, TIS108, an azole‐type SL biosynthesis inhibitor effectively reduced numbers of attached root parasites Orobanche minor and Striga hermonthica without affecting their host plants; tomato and rice, respectively. AM colonization resulted in weak but distinctly enhanced plant resistance to pathogens. SL mimics can be used to promote AM symbiosis and to reduce the application rate of systemic‐acquired resistance inducers which are generally phytotoxic to horticultural crops. © 2019 Society of Chemical Industry 相似文献
82.
Larvae of jack mackerel Trachurus japonicus were sampled in seven depth layers (0–10 m, 10–20 m, 20–30 m, 30–40 m, 40–50 m, 50–70 m, and 70–100 m), with a closing-type
frame net, on 26th–27th February, 2003, at Sta. V (27°50′N, 126°00′E) continental shelf edge in the southern part of East
China Sea, to examine their vertical distribution. Most of the larvae (>90%) occurred in the upper 50 m layer during both
day and night. In the daytime, larvae of length from 3.0 mm to 4.5 mm were most abundant in the 10–20 m layer, those from
5.0 to 6.0 mm were most abundant in the 20–30 m layer, those from 6.0 to 8.0 mm occurred at greater depth, in the 30–40 m
layer, and those more than 9.0 mm were found in the 0–10 m layer and performed ontogenetic vertical migrations. Larvae from
6 mm to 8 mm length performed diurnal vertical migration, for the percentage (16.7%) of larval number in the 0–20 m layer
in the daytime increased to 42.1% at night and the percentage (78.1%) in the 20–50 m layer in the daytime decreased to 49.0%
at night. 相似文献
83.
The exposure of freesia corms to ethylene (C2H4) at ca. 10 μl/l air for only 5 h was sufficient to promote sprouting, either under a closed system in which corms were treated in a sealed space of 3–10 1 or under a flow system in which corms were exposed to a continuous flow of air containing C2H4. Under the closed system, little change in corm response to C2H4 was found with increasing duration of exposure from 5 to 48 h, and the C02 concentration reached nearly 4% after 48 h. On the other hand, under the flow system, in which CO2 did not accumulate above 0.1%, the promotive effect of C2H4 was diminished by extended exposure from 5 to 48 h.Repeated treatment with C2H4 for 23 h daily on 4 successive days resulted in the lowering of the promotive effect as compared with a single treatment, but repeated application of C2H4 for 5 h daily showed the same effect as a single application and gave a high sprouting rate similar to smoke treatment, independent of ambient temperature ranging from 25 to 35° C.Corms exposed to C2H4 for 5 h daily, or to smoke for 4 days, exhibited a better chilling response and advanced flowering. 相似文献
84.
85.
Satoshi Taba Nao Miyahira Kanami Nasu Tetsuya Takushi Zen-ichi Moromizato 《Journal of General Plant Pathology》2007,73(5):374-376
Strawberry pear (pitahaya, pitaya) [Hylocereus undatus (Haw.) Britt. and Rose] postharvest fruit rot was found at an agricultural products store in Itoman city, Okinawa Prefecture
in 2006. The symptoms included depressed, water-soaked lesions with olive to black powdery spots coalescing into a soft rot.
The causal fungus was identified as Bipolaris cactivora (Petrak) Alcorn. This is the first report of strawberry pear fruit rot caused by B. cactivora. 相似文献
86.
Nobuya Hishiyama Hideki Kayanuma Tohru Matsui Hideo Yano Tsunenori Suganuma Masayuki Funaba Hiroshi Fujise 《Canadian journal of veterinary research》2006,70(4):305-307
Most mammals, including dogs, synthesize vitamin C in the liver. We measured the plasma concentration of vitamin C to assess the body vitamin C status in 15 dogs with a portosystemic shunt (PSS). The plasma biochemical parameters indicated liver abnormalities in all the dogs. In contrast, the plasma concentration of vitamin C ranged from 2.21 to 9.03 mg/L in the 15 dogs and was below the reference range (3.2 to 8.9 mg/L) in only 2 dogs. These findings suggest that vitamin C status is not impaired in dogs with PSS. 相似文献
87.
The previous scanning electron microscopy study of the Hypoderma species suggested that Hypoderma sinense Pleske (H. sinense) was different from Hypoderma bovis (H. bovis) and Hypoderma lineatum (H. lineatum). In this study, the mitochondrial cytochrome oxidase I (COI) gene sequence of H. sinense was compared with those of the other two species. The H. sinense sequence showed only 88.3% homology to H. bovis and 88.5% to H. lineatum. The results of the sequencing analysis confirm that H. sinense is a different species from H. bovis and H. lineatum. 相似文献
88.
Li W Nasu T Ma Y Zhu X Wanng W Song R Makimura S 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2004,66(7):891-892
Sixty yaks were autopsied to determine the migration pattern of warble fly larvae. In August, first instars were observed in the body of yak for the first time. These larvae peaked in number in October. From November to February, second instars were detected and their number peaked in January. Third instars appeared in January and peaked in March. Forty-five yaks were administered with ivermectin: 15 animals in September, 15 in October and 15 in November. Between December and June, the number of warbles was checked by palpation. Although some warbles were observed in the September- and November-treated groups, no warbles were detected in the October-treated group. Treatment of yaks with ivermectin was most effective for warble fly in October. 相似文献
89.
Saishu YOSHIDA Masashi HIGUCHI Hiroki UEHARU Naoto NISHIMURA Mitsuyoshi TSUDA Hideji YAKO Mo CHEN Hideo MITSUISHI Yoshiya SANO Takako KATO Yukio KATO 《The Journal of reproduction and development》2014,60(4):295-303
The pituitary is an important endocrine tissue of the vertebrate that produces and secretes many hormones. Accumulating data
suggest that several types of cells compose the pituitary, and there is growing interest in elucidating the origin of these cell
types and their roles in pituitary organogenesis. Therein, the histogenous cell line is an extremely valuable experimental tool
for investigating the function of derived tissue. In this study, we compared gene expression profiles by microarray analysis and
real-time PCR for murine pituitary tumor-derived non-hormone-producing cell lines TtT/GF, Tpit/F1 and Tpit/E. Several genes are
characteristically expressed in each cell line: Abcg2, Nestin, Prrx1,
Prrx2, CD34, Eng, Cspg4 (Ng2),
S100β and nNos in TtT/GF; Cxcl12, Raldh1,
Msx1 and Twist1 in Tpit/F1; and Cxadr, Sox9,
Cdh1, EpCAM and Krt8 in Tpit/E. Ultimately, we came to the following conclusions: TtT/GF cells
show the most differentiated state, and may have some properties of the pituitary vascular endothelial cell and/or pericyte.
Tpit/F1 cells show the epithelial and mesenchymal phenotypes with stemness still in a transiting state. Tpit/E cells have a
phenotype of epithelial cells and are the most immature cells in the progression of differentiation or in the initial
endothelial-mesenchymal transition (EMT). Thus, these three cell lines must be useful model cell lines for investigating pituitary
stem/progenitor cells as well as organogenesis. 相似文献
90.