Variation in the morphology of fine roots in Cryptomeria japonica determined by branch order-based classification

2019 ◽  
Vol 444 (1-2) ◽  
pp. 139-151 ◽  
Author(s):  
Ryusei Wada ◽  
Toko Tanikawa ◽  
Ryuusei Doi ◽  
Yasuhiro Hirano
Keyword(s):  
Fine Roots ◽  
Cryptomeria Japonica ◽  
Branch Order

scholarly journals Differential variation of NSCs in root branch orders of Fraxinus mandshurica Rupr. seedlings across different drought intensities and soil substrates

2021 ◽  
Author(s):  
Li Ji ◽  
Yue Liu ◽  
Jun Wang ◽  
Zhimin Lu ◽  
Yuchun Yang ◽  
...  
Keyword(s):  
Fine Roots ◽  
Fine Root ◽  
Sandy Loam ◽  
Starch Content ◽  
Soluble Sugar ◽  
Root Traits ◽  
Drought Intensity ◽  
Branch Order ◽  
Root Branch Order ◽  
Loam Soil

Non-structural carbohydrates (NSCs) facilitate plants adapt to drought stress, could characterize trees growth and survival ability and buffer against external disturbances. Previous studies have focused on the distribution and dynamics of NSCs among different plant organs under drought conditions. However, discussion about the NSC levels of fine roots in different root branch order were little, especially the relationship between fine root trait variation and NSCs content. The aim of the study is to shed light into the synergistic variation of fine root traits and NSC content in different root branch order under different drought and soil substrate conditions. 2-year-old Fraxinus mandshurica Rupr. potted seedlings were planted in three different soil substrates (humus, loam and sandy-loam soil) and conducted to four drought intensities (CK, mild drought, moderate drought and severe drought) for two months. With the increase of drought intensity, the biomass of fine roots decreased significantly. Under the same drought intensity, seedlings in sandy-loam soil have higher root biomass, and the coefficient of variation of fifth-order roots (37.4%, 44.5% and 53.0% in humus, loam and sandy loam, respectively) is higher than that of lower-order roots. With the increase of drought intensity, the specific root length (SRL) and average diameter (AD) of all five orders increased and decreased, respectively. The fine roots in humus soil had higher soluble sugar content and lower starch content. Also, the soluble sugar and starch content of fine roots showed decreasing and increasing tendency respectively. Soluble sugar and starch explain the highest degree of total variation of fine root traits, that is 32.0% and 32.1% respectively. With ascending root order, the explanation of the variation of root traits by starch decreased (only 6.8% for fifth-order roots). The response of different root branch order fine root morphological traits of F. mandshurica seedlings to resource fluctuations ensures that plants maintain and constructure the root development by an economical way to obtain more resources.

scholarly journals Changes in the carbon and nutrient status of Cryptomeria japonica needles and fine roots following 7 years of nitrogen addition

Plant Root ◽  
2015 ◽  
Vol 9 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Junko Nagakura ◽  
Akio Akama ◽  
Hidetoshi Shigenaga ◽  
Takeo Mizoguchi ◽  
Takashi Yamanaka ◽  
...  
Keyword(s):  
Fine Roots ◽  
Cryptomeria Japonica ◽  
Nutrient Status ◽  
Nitrogen Addition

Effects of simulated drought stress on the fine roots of Japanese cedar (Cryptomeria japonica) in a plantation forest on the Kanto Plain, eastern Japan

2007 ◽  
Vol 12 (2) ◽  
pp. 143-151 ◽  
Author(s):  
Bohdan Konôpka ◽  
Kyotaro Noguchi ◽  
Tadashi Sakata ◽  
Masamichi Takahashi ◽  
Zuzana Konôpková
Keyword(s):  
Drought Stress ◽  
Fine Roots ◽  
Cryptomeria Japonica ◽  
Japanese Cedar ◽  
Plantation Forest ◽  
Simulated Drought ◽  
Eastern Japan

Estimating the production and mortality of fine roots in a Japanese cedar (Cryptomeria japonica D. Don) plantation using a minirhizotron technique

2005 ◽  
Vol 10 (6) ◽  
pp. 435-441 ◽  
Author(s):  
Kyotaro Noguchi ◽  
Tadashi Sakata ◽  
Takeo Mizoguchi ◽  
Masamichi Takahashi
Keyword(s):  
Fine Roots ◽  
Cryptomeria Japonica ◽  
Japanese Cedar

Seasonal Variation in Contents of C, N and P and Stoichiometry Characteristics in Fine Roots, Stems and Needles ofLarix principis-rupprechtii

2014 ◽  
Vol 49 (5) ◽  
pp. 560 ◽  
Author(s):  
Zhao Yafang ◽  
Xu Fuli ◽  
Wang Weiling ◽  
Wang Lingling ◽  
Wang Guoxing ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Fine Roots

Influence of Pruning and Irrigation on Root Longevity of `Concord' Vines

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 511a-511
Author(s):  
L.H. Comas ◽  
D.M. Eissenstat ◽  
A.N. Lakso ◽  
R. Dunst
Keyword(s):  
Fine Roots ◽  
Fine Root ◽  
Cultural Practices ◽  
Growing Season ◽  
Root Production ◽  
Root Dynamics ◽  
Supplemental Irrigation ◽  
Root Longevity ◽  
Root Lifespan ◽  
Median Lifespan

Improved cultural practices in grape require a better understanding of root growth and physiology. Seasonal root dynamics were examined in mature `Concord' vines with balanced or minimal-pruning, and with or without supplemental irrigation in Fredonia, N.Y. Fine roots were continuously produced during the growing season starting in mid-June around time of bloom. Roots began to die in September at verasion. Minimal-pruned vines produced more roots than balanced-pruned vines, with the minimal-pruned/unirrigated vines producing the most roots. Irrigation and pruning delayed fine root production at the beginning of the growing season. Peak fine root flush was 16 June to 21 July 1997 for the minimal-pruned/unirrigated treatment, while peak flush was 7 July to 2 Sept. 1997 for balanced-pruned/irrigated treatment. In minimal-pruned vines, many roots were observed down to depths of 120 cm. In contrast, balanced-pruned vines had very few fine roots deeper than 40 cm. From initial observations, median lifespan of fine roots was 5 to 9.5 weeks, depending on treatment and depth in soil. Fine roots lived longer in the top 15-cm than in the 16- to 30-cm layer of soil in all treatments. Both minimal pruning and irrigation increased root lifespan. Fine roots had the shortest lifespan in the balanced-pruned/unirrigated treatment and the longest lifespan in the minimal-pruned/irrigated treatment.

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