Regulatory effects of root pruning on leaf nutrients, photosynthesis, and growth of trees in a closed-canopy poplar plantation

Jing, Dawei; Du, Zhen‐Yu; Ming-you, Wang; Wang, Qinghua; Ma, Hao; Liu, Fang‐Chun; Ma, Bin; Dong, Yanjun

doi:10.1371/journal.pone.0197515

Cited by 15 publications

(14 citation statements)

References 25 publications

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“…Principally, the primary function of root system is to absorb water and nutrient. When the root becomes older, it regenerates naturally to guarantee the continuity of water and nutrient absorption (Jing et al 2018). This outcome was similar to the previous studies which were implemented in different forest locations (Mendoza-Ponce and Galicia 2010; Maulana et al 2016;Purwanto et al 2015;Nam et al 2016;Altanzagas et al 2019).…”

Section: Biomass Accumulation In Four Species Of Community Forestssupporting

confidence: 88%

Allometric equations for estimating biomass of community forest tree species in Madiun, Indonesia

et al. 2020

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Abstract. Wirabuana PYAP, Setiahadi R, Sadono R, Lukito M, Martono DS, Matatula J. 2020. Allometric equations for estimating biomass of community forest tree species in Madiun, Indonesia. Biodiversitas 21: 4291-4300. The capability of community forests for offsetting carbon emissions highly depends on their biomass production. Unfortunately, the measurement of tree biomass in community forests using a destructive method is expensive and time-consuming. It is also almost impossible to conduct this method for all trees in the observation area. Therefore, the development of allometric equations is essential to support tree biomass estimation in community forests. This study was designed to construct specific models for predicting individual tree biomass in community forests, located in Madiun, Indonesia. We destructively sampled approximately 120 trees from four different species (30 trees for each species), i.e., Falcataria moluccana, Melia azedarach, Swietenia macrophylla, and Tectona grandis. For every tree sample, the measurement of biomass was conducted in each tree’s component, namely roots, stem, branches, and leaves. The allometric equations were developed with regression analysis using predictor variables, like diameter at breast height (D), squared diameter at breast height combined with tree height (D2H), as well as D and H separately. Results found that for four species, the mean biomass in the stem was 50.3%, followed by branches 25.4%, roots 15.9%, and leaves 8.3%. The best equation for estimating biomass in every component and total of four species was different. However, our study showed that the equation lnŶ = -3.037 + 1.430 lnD + 1.684 was reliable to estimate total individual tree biomass of four species in the surveyed area since this model had accuracy of 90.8%. Referring to these findings, we recommended the utilization of an allometric equation as an alternative method for facilitating more efficient biomass measurement in the community forests.

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Section: Biomass Accumulation In Four Species Of Community Forestssupporting

confidence: 88%

Allometric equations for estimating biomass of community forest tree species in Madiun, Indonesia

et al. 2020

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“…If the sink tissue strength is altered, then the source tissue performance will also be affected through feedback mechanisms, possibly through xylem transmitted signals ( Chang and Zhu 2017 ). Typical examples of reduction of the sink strength are root area reduction and impaired phloem transport, which are known to produce C assimilation alterations in trees ( Campany et al 2017 , Jing et al 2018 , Rainer-Lethaus and Oberhuber 2018 ). This regulation can happen at other levels as well.…”

Section: Interaction Between Phloem and Xylemmentioning

confidence: 99%

Mobile forms of carbon in trees: metabolism and transport

Domínguez

Niittylä

2021

Tree Physiology

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Plants constitute 80% of the biomass on earth, and almost two thirds of this biomass is found in wood. Wood formation is a carbon demanding process and relies on carbon transport from photosynthetic tissues. Thus, understanding the transport process is of major interest for understanding terrestrial biomass formation. Here we review the molecules and mechanisms used to transport and allocate carbon in trees. Sucrose is the major form in which carbon is transported, found in the phloem sap of all so far investigated tree species. However, in several tree species sucrose is accompanied by other molecules, notably polyols and the raffinose family of oligosaccharides. We describe the molecules that constitute each of these transport groups, and their distribution across different tree species. Further, we detail the metabolic reactions for their synthesis, the mechanisms by which trees load and unload these compounds in and out of the vascular system, and how they are radially transported in the trunk and finally catabolized during wood formation. We also address a particular carbon recirculation process between phloem and xylem that occurs in trees during the annual cycle of growth and dormancy. A search of possible evolutionary drivers behind the diversity of C carrying molecules in trees reveals no consistent differences in carbon transport mechanisms between angiosperm and gymnosperm trees. Furthermore, the distribution of C forms across species suggests that climate related environmental factors will not either explain the diversity of carbon transport forms. However, the consideration of C transport mechanisms in relation to tree—rhizosphere coevolution deserves further attention. To conclude the review, we identify possible future lines of research in this field.

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“…(D) Somatic embryogenesis from callus occurs by the expression of a network of transcription factors, composed of BBM, LEC2, FUSCA, ABI3, and AGL15. transported to another location, but also to expand the absorption area of the root and to improve the rhizosphere soil fertility (Jing et al, 2017(Jing et al, , 2018.…”

Section: Root Pruning: Cut a Root To Make A Rootmentioning

confidence: 99%

“…In potato, root pruning 2 weeks prior to harvesting leads to the formation of a firmer skin around the potatoes, resulting in a longer shelf life. In tree species like poplar, root pruning is mostly performed to create a denser mass of lateral roots, leading to a reduced shock when the plant is transported to another location, but also to expand the absorption area of the root and to improve the rhizosphere soil fertility ( Jing et al, 2017 , 2018 ).…”

Section: Divide Et Imperamentioning

confidence: 99%

Pars Pro Toto: Every Single Cell Matters

et al. 2021

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Compared to other species, plants stand out by their unparalleled self-repair capacities. Being the loss of a single cell or an entire tissue, most plant species are able to efficiently repair the inflicted damage. Although this self-repair process is commonly referred to as “regeneration,” depending on the type of damage and organ being affected, subtle to dramatic differences in the modus operandi can be observed. Recent publications have focused on these different types of tissue damage and their associated response in initiating the regeneration process. Here, we review the regeneration response following loss of a single cell to a complete organ, emphasizing key molecular players and hormonal cues involved in the model species Arabidopsis thaliana. In addition, we highlight the agricultural applications and techniques that make use of these regenerative responses in different crop and tree species.

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Regulatory effects of root pruning on leaf nutrients, photosynthesis, and growth of trees in a closed-canopy poplar plantation

Cited by 15 publications

References 25 publications

Allometric equations for estimating biomass of community forest tree species in Madiun, Indonesia

Allometric equations for estimating biomass of community forest tree species in Madiun, Indonesia

Mobile forms of carbon in trees: metabolism and transport

Pars Pro Toto: Every Single Cell Matters

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