Seasonal Changes in Uptake, Distribution and Redistribution of 15N-Nitrogen in Young Tea(Camellia sinensis L.) Plants.

Okano, Kunio; Matsuo, Kiyoshi

doi:10.1626/jcs.65.707

Cited by 15 publications

(11 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4a ) was consistent with these previous studies. In tea plant, mature leaves play the role as nutrient storage organ ‘sink’ and mobilise N to support the growth of new shoots when root uptake is limited due to low temperature in early spring [ 31 ]. Thus, the content of TAG in mature leaves was higher than that of new shoots in tea plants grown under low N level (Figs.…”

Section: Discussionmentioning

confidence: 99%

Lipidomics analysis unravels the effect of nitrogen fertilization on lipid metabolism in tea plant (Camellia sinensis L.)

Liu

Burgos

et al. 2017

BMC Plant Biol

View full text Add to dashboard Cite

BackgroundNitrogen (N) plays an important role in the formation of tea quality-related compounds, like amino acids and flavor/aroma origin compounds. Lipids, which have been reported to be affected by N deficiency, are precursors to the generation of flavor/aroma origin compounds in tea plant. However, there is no literature about the lipid profiles of tea plant affected by N fertilization. Hence, we hypothesize that the biosynthesis of flavor-related compounds in tea was affected by N through its regulation of lipid metabolism.ResultsIn this study, mature leaves and new shoots of tea plant grown under three N levels at the rates of 0, 285 and 474 kg/ha were applied for ultra-performance liquid chromatography-mass spectrometry (UPLC/MS) based lipidomic analysis. Totally, 178 lipid species were identified. The results showed that the composition of lipid compounds in mature leaves and new shoots varied dramatically, which was also affected by N levels. The higher content of the storage lipid TAG and higher carbon (C)/N ratio in mature leaves than that of new shoots in tea plants grown under low N level (0 kg/ha) suggested that tea plants could remobilize the C stored in TAG to maintain their C/N balance and help to improve the quality of tea. N fertilization resulted in a higher content of the compounds 36:6 MGDG and 36:6 DGDG. Since these compounds contain linolenic acid (18:3), a precursor to the formation of aroma origin compounds, we suggested their increase could contribute to the quality of tea.ConclusionsTaken together, the present work indicated that appropriate application of N fertilizer could balance the lipid metabolism and the formation of flavor/aroma origin compounds, which help to improve the quality of tea. Moreover, excess N fertilization might deteriorate the aroma quality of made tea due to increases of precursors leading to grassy odor.Electronic supplementary materialThe online version of this article (10.1186/s12870-017-1111-6) contains supplementary material, which is available to authorized users.

show abstract

Section: Discussionmentioning

confidence: 99%

Lipidomics analysis unravels the effect of nitrogen fertilization on lipid metabolism in tea plant (Camellia sinensis L.)

Liu

Burgos

et al. 2017

BMC Plant Biol

View full text Add to dashboard Cite

show abstract

“…Nitrogen in young shoots of the early spring derives from two sources, the N remobilization from storage in plants of previous absorption and the current absorption during the growth of spring tea (Fan et al., 2020; Ma et al., 2019; Okano & Matsuo, 1996). DSD significantly improved N dff% , 15 N amount, and its proportion of N fertilizer in the young shoots (Shoot RE FN% ), which was partly attributed to greater N remobilization from storage as resulting from increasing absorption during winter dormancy (Figure 4, Table 2).…”

Section: Discussionmentioning

confidence: 99%

“…This is partly explained by low shoot harvest index as only very young tips (bud with one expanding leaf) are harvested for quality tea production before they reach maximum biomass. Furthermore, a large amount of 15 N was found in other plant parts (roots, twigs, and leaves) which can be used for later summer and autumn teas (Okano & Matsuo, 1996).…”

Section: Discussionmentioning

confidence: 99%

“…Fertilizers are applied to coincide with the seasonal production and nutrient requirement, which are frequently split into three to four applications made before the spring, summer, and early autumn seasons and in late autumn after the termination of the tea season. Previous works have demonstrated that N fertilizer applied in autumn before the tea plants are entering into winter dormancy is readily absorbed, stored as N reserves in plants, and remobilized to support the growth of young shoots in the following spring in tea plants (Ma et al., 2019; Okano & Matsuo, 1996). The basal N fertilization has greater contribution to spring tea than other application timing.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deep placement of nitrogen fertilizer in autumn improves N utilization by spring tea (Camellia sinensis L.)

Ruan

2021

J. Plant Nutr. Soil Sci.

View full text Add to dashboard Cite

Background The efficient use of fertilizers depends very much on their proper placement, and the effects of fertilizer placement on the woody perennial plant tea (Camellia sinensis L.) are not clearly understood. Methods A 15N mini‐plot field experiment was conducted to investigate the effects of four common techniques of fertilizer placement techniques. 15N‐labeled urea was applied in October by surface broadcasting, surface broadcasting with 3–5 cm soil incorporation, shallow (3–5 cm), and deep (10–15 cm) side dressing (DSD). The proportion of N derived from 15N‐labeled fertilizer (Ndff%) was estimated in root, and soil samples were collected 15 and 43 days after fertilization (DAA15 and DAA43) and in young shoots collected in the following spring. Results Most fertilizer 15N was located in the soil near the placement position at DAA15 and 15N had moved downward but maintained a similar distribution in the soil profile at DAA43. The distribution of fibrous root Ndff% in the soil profile was very similar to that of soil Ndff%. DSD resulted in the highest shoot Ndff%, the estimated amount of 15N in young shoot derived from 15N‐label fertilizer (shoot 15N), and its percentage related to the amount of 15N‐labeled fertilizer input (REFN%). Thus, DSD of urea as basal application in autumn maintained a higher and prolonged N supply in the middle and deep soil layers, thereby improving fertilizer‐N absorption and utilization in the following spring tea. However, direct broadcasting of urea on the soil surface resulted in low N availability in the soil and utilization by tea plants. Conclusion Our results demonstrate that DSD of N fertilization should be recommended for tea planting to increase N use efficiency and reduce environmental losses in forms of runoff and volatilization.

show abstract

“…In woody plants, cycling of nitrogen from one root part to an other via the shoots may be slow, compared to herbaceous plants. In tea plants, young shoots, harvested for green tea, may receive a substantial amount of nitrogen from storage organs like mature leaves, stems, and roots (Hoshina 1985;Okano and Matsuo 1996). Thus in woody plants, seasonal redistribution may be more important (Millard 1993) than daily cycling of nitrogen as observed in herbaceous plants (Simpson 1986).…”

Section: Discussionmentioning

confidence: 99%

Uptake, transport and assimilation of¹⁵N-nitrate and¹⁵N-ammonium in tea (Camellia sinensisL.) plants

Morita¹,

Ohta²,

Yoneyama³

1998

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

Seasonal Changes in Uptake, Distribution and Redistribution of 15N-Nitrogen in Young Tea(Camellia sinensis L.) Plants.

Cited by 15 publications

References 8 publications

Lipidomics analysis unravels the effect of nitrogen fertilization on lipid metabolism in tea plant (Camellia sinensis L.)

Lipidomics analysis unravels the effect of nitrogen fertilization on lipid metabolism in tea plant (Camellia sinensis L.)

Deep placement of nitrogen fertilizer in autumn improves N utilization by spring tea (Camellia sinensis L.)

Uptake, transport and assimilation of¹⁵N-nitrate and¹⁵N-ammonium in tea (Camellia sinensisL.) plants

Contact Info

Product

Resources

About

Seasonal Changes in Uptake, Distribution and Redistribution of 15N-Nitrogen in Young Tea(Camellia sinensis L.) Plants.

Cited by 15 publications

References 8 publications

Lipidomics analysis unravels the effect of nitrogen fertilization on lipid metabolism in tea plant (Camellia sinensis L.)

Lipidomics analysis unravels the effect of nitrogen fertilization on lipid metabolism in tea plant (Camellia sinensis L.)

Deep placement of nitrogen fertilizer in autumn improves N utilization by spring tea (Camellia sinensis L.)

Uptake, transport and assimilation of15N-nitrate and15N-ammonium in tea (Camellia sinensisL.) plants

Contact Info

Product

Resources

About

Uptake, transport and assimilation of¹⁵N-nitrate and¹⁵N-ammonium in tea (Camellia sinensisL.) plants