TY - JOUR
T1 - Correlating Coffea canephora 3D architecture to plant photosynthesis at a daily scale and vegetative biomass allocation
AU - Rakocevic, Miroslava
AU - Baroni, Danilo Força
AU - de Souza, Guilherme Augusto Rodrigues
AU - Bernado, Wallace de Paula
AU - de Almeida, Cláudio Martins
AU - Matsunaga, Fábio Takeshi
AU - Rodrigues, Weverton Pereira
AU - Ramalho, José Cochicho
AU - Campostrini, Eliemar
N1 - © The Author(s) 2022. Published by Oxford University Press. All rights reserved.
PY - 2023/4
Y1 - 2023/4
N2 - Coffea canephora (C. canephora) has two botanical varieties, Robusta and Conilon. Intraspecific variability was hypothesized and projected for the selection of C. canephora plants able to maintain production in the context of global climate changes. For that, architectural, C-assimilation and biomass analyses were performed on 17-month-old Robusta (clones 'A1' and '3 V') and Conilon (clones '14' and '19') varieties grown in non-limiting soil, water and mineral nutrient conditions. Nondestructive coffee plant architecture coding, reconstruction and plant photosynthesis estimations were performed using a functional-structural plant modeling platform OpenAlea. 3D reconstructions and inclusion of parameters calculated and estimated from light response curves, such as dark respiration (R-d), maximum rate of carboxylation of RuBisCO and photosynthetic electron transport allowed the estimation of instantaneous and daily plant photosynthesis. The virtual orchard leaf area index was low, and light was not a limiting factor in early C. canephora development stages. Under such conditions, Robusta assimilated more CO2 at the plant and orchard scale and produced higher total biomass than Conilon. Lower plant daily photosynthesis and total biomass were correlated to higher R-d in Conilon than in Robusta. Among the architectural traits, leaf inclination, size and allometry were most highly correlated with plant assimilation and biomass. Relative allocation in leaf biomass was higher in '19' Conilon than in young Robusta plants, indicating intraspecific biomass partitioning. Similarly, variation in relative distribution of the root biomass and the root volume reflected clonal variation in soil occupation, indicating intraspecific variability in space occupation competitiveness. Coffea canephora denoted high root allocation in both Conilon and Robusta clones. However, relevant differences at subspecific levels were found, indicating the high potential of C. canephora to cope with drought events, which are expected to occur more frequently in the future, because of climate changes. The methodology developed here has the potential to be used for other crops and tree species.
AB - Coffea canephora (C. canephora) has two botanical varieties, Robusta and Conilon. Intraspecific variability was hypothesized and projected for the selection of C. canephora plants able to maintain production in the context of global climate changes. For that, architectural, C-assimilation and biomass analyses were performed on 17-month-old Robusta (clones 'A1' and '3 V') and Conilon (clones '14' and '19') varieties grown in non-limiting soil, water and mineral nutrient conditions. Nondestructive coffee plant architecture coding, reconstruction and plant photosynthesis estimations were performed using a functional-structural plant modeling platform OpenAlea. 3D reconstructions and inclusion of parameters calculated and estimated from light response curves, such as dark respiration (R-d), maximum rate of carboxylation of RuBisCO and photosynthetic electron transport allowed the estimation of instantaneous and daily plant photosynthesis. The virtual orchard leaf area index was low, and light was not a limiting factor in early C. canephora development stages. Under such conditions, Robusta assimilated more CO2 at the plant and orchard scale and produced higher total biomass than Conilon. Lower plant daily photosynthesis and total biomass were correlated to higher R-d in Conilon than in Robusta. Among the architectural traits, leaf inclination, size and allometry were most highly correlated with plant assimilation and biomass. Relative allocation in leaf biomass was higher in '19' Conilon than in young Robusta plants, indicating intraspecific biomass partitioning. Similarly, variation in relative distribution of the root biomass and the root volume reflected clonal variation in soil occupation, indicating intraspecific variability in space occupation competitiveness. Coffea canephora denoted high root allocation in both Conilon and Robusta clones. However, relevant differences at subspecific levels were found, indicating the high potential of C. canephora to cope with drought events, which are expected to occur more frequently in the future, because of climate changes. The methodology developed here has the potential to be used for other crops and tree species.
KW - branching order
KW - Conilon
KW - daily assimilation
KW - leaf area
KW - plant architecture
KW - reiteration
KW - respiration
KW - Robusta
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85152467616&origin=resultslist&sort=plf-t&src=s&st1=10.1093%2ftreephys%2ftpac138&sid=eb9856468dcb31d949a286e2d8b4927b&sot=b&sdt=b&sl=29&s=DOI%2810.1093%2ftreephys%2ftpac138%29&relpos=0&citeCnt=1&searchTerm=
U2 - 10.1093/treephys/tpac138
DO - 10.1093/treephys/tpac138
M3 - Article
C2 - 36519756
SN - 0829-318X
VL - 43
SP - 556
EP - 574
JO - Tree Physiology
JF - Tree Physiology
IS - 4
ER -