Expression of the SPL-like gene LaSPL9 in Japanese larch (Larix leptolepis) is regulated by miR156 during somatic embryogenesis

Summary Four flavonoid compounds, ((+)-taxifolin, (+)-aromadendrin, quercetin and (−)-naringenin), from Japanese larch (Larix leptolepis) wood were heated at 170 ℃C for 60 min at pH=3.46 (hydrothermolysis treatment). Alphitonin, four taxifolin steric isomers and quercetin were recovered from the treatment of (+)-taxifolin, and maesopsin, four aromadendrin steric isomers and kaempferol from (+)-aromadendrin. The reaction products from (−)-naringenin were found to be a mixture with (+)-naringenin. Quercetin was not changed by the treatment. Possible pathways for the formation of these products are discussed.

Download Full-text

Attraction of Steamed Japanese Larch(Larix leptolepis(Sieb, et Zucc.) Gord.) Heartwood to the Subterranean TermiteCoptotermes formosanusShiraki (Isoptera: Rhinotermitidae)

Holzforschung ◽

10.1515/hfsg.1998.52.1.7 ◽

1998 ◽

Vol 52 (1) ◽

pp. 7-12 ◽

Cited By ~ 18

Author(s):

Shuichi Doi ◽

Munezoh Takahashi ◽

Tsuyoshi Yoshimura ◽

Minoru Kubota ◽

Akio Adachi

Keyword(s):

Japanese Larch ◽

Larix Leptolepis

Download Full-text

Effect of Thinning on the Wood Structure in Annual Growth Rings of Japanese Larch (Larix Leptolepis)

IAWA Journal ◽

10.1163/22941932-90001492 ◽

1997 ◽

Vol 18 (3) ◽

pp. 281-290 ◽

Cited By ~ 7

Author(s):

Shinya Koga ◽

Kazuyuki Oda ◽

Juichi Tsutsumi ◽

Takaaki Fujimoto

Keyword(s):

Cell Wall ◽

Wall Thickness ◽

Annual Ring ◽

Growth Ring ◽

Ring Width ◽

Japanese Larch ◽

Larix Leptolepis ◽

Cross Sectional ◽

Annual Growth Rings ◽

Average Wall Thickness

The objective of this study was to determine the effect of thinning on the annual ring structure and the cross-sectional dimensions of tracheids in plantation-grown Japanese larch (Larix leptolepis). Annual ring width, earlywood width and latewood width increased significantly after thinning. The width of the band of nonflat latewood tracheids in the annual ring increased more than that of flat latewood tracheids. Thinning did not significantly affect latewood percentage. The average radial diameter of both earlywood and latewood tracheids increased after thinning. After thinning, average wall thickness of earlywood tracheids increased, while that of latewood tracheids decreased. Cell wall percentage in earlywood was not influenced significantly by thinning, but latewood cell wall percentage decreased. The changes of the average radial tracheid diameter, the average wall thickness of tracheids and cell wall percentage from earlywood to latewood within a growth ring became more gradual after thinning. However, thinning did not affect significantly the cell wall percentage of the whole growth ring. This study suggests that thinning has little effect on wood density of the whole growth ring in Japanese larch.

Download Full-text

Diurnal shrinkage and swelling of tree stems

Canadian Journal of Botany ◽

10.1139/b69-026 ◽

1969 ◽

Vol 47 (1) ◽

pp. 217-219

Author(s):

J. M. Sykes ◽

L. Leyton

Keyword(s):

Water Status ◽

Considerable Change ◽

Japanese Larch ◽

Larix Leptolepis ◽

Shrinkage And Swelling

Experiments with dendrographs on trees of Japanese larch, Larix leptolepis (Sieb. & Zucc.) Gord., subjected to overlapping sawcuts, suggest that this treatment brings about a considerable change in the water status of conducting elements in the stem.

Download Full-text