Abstract
Abstract Background In this study, we aimed to test the hypothesis that magnesium (Mg) remobilization in citrus plants is regulated by Mg supply and contributes to differences in the growth of the parent and branch organs. Citrus seedlings were grown in sand under Mg deficient (0 mmol Mg 2+ L −1 , -Mg) and Mg sufficient (2 mmol Mg 2+ L −1 , + Mg) conditions. The effects on biomass, Mg uptake and transport, gas exchange and chlorophyll fluorescence, as well as related morphological and physiological parameters were evaluated in different organs. Results Mg deficiency significantly decreased plant biomass, with a decrease in total plant biomass of 39.6%, and a greater than twofold decrease in the branch organs compared with that of the parent organs. Reduced photosynthesis capacity was caused by a decreased in pigment levels and photosynthetic electron transport chain disruption, thus affecting non-structural carbohydrate accumulation and plant growth. However, the adaptive responses of branch leaves to Mg deficiency were greater than those in parent leaves. Mg deficiency inhibited plant Mg uptake but enhanced Mg remobilization from parent to branch organs, thus changing related growth variables and physiological parameters, including protein synthesis and antioxidant enzyme activity. Moreover, in the principal components analysis, these variations were highly clustered in both the upper and lower parent leaves, but highly separated in branch leaves under the different Mg conditions. Conclusions Mg deficiency inhibits the growth of the parent and branch organs of citrus plants, with high Mg mobility contributing to differences in physiological metabolism. These findings suggest that Mg management should be optimized for sustainable citrus production.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Mg deficiency decreased total citrus biomass by 39.6%.
CitrusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg deficiency significantly decreased plant biomass, with a decrease in total plant biomass of 39.6%, and a greater than twofold decrease in the branch organs compared with that of the parent organs.”
t0“citrus”
Claim · model-written summary
Branch organs had a greater than twofold biomass decrease compared with parent organs under Mg deficiency.
- Organ / stage
- branch organse0
- Treatment
- Mg deficiencye0
- Outcome
- plant biomasse0
- Direction
- decreasee0
- Value
- greater than twofolde0
- Comparator
- parent organse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg deficiency significantly decreased plant biomass, with a decrease in total plant biomass of 39.6%, and a greater than twofold decrease in the branch organs compared with that of the parent organs.”
t0“citrus”
Claim · model-written summary
Decreased pigment levels and disrupted electron transport caused reduced photosynthetic capacity, affecting carbohydrate accumulation and growth.
- Outcome
- Reduced photosynthesis capacitye0
- Qualifier
- a decreased in pigment levels and photosynthetic electron transport chain disruptione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduced photosynthesis capacity was caused by a decreased in pigment levels and photosynthetic electron transport chain disruption, thus affecting non-structural carbohydrate accumulation and plant growth.”
t0“citrus”
Claim · model-written summary
Branch leaves had greater adaptive responses to Mg deficiency than parent leaves.
- Organ / stage
- branch leavese0
- Treatment
- Mg deficiencye0
- Outcome
- adaptive responsese0
- Direction
- greatere0
- Comparator
- parent leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, the adaptive responses of branch leaves to Mg deficiency were greater than those in parent leaves.”
t0“citrus”
Claim · model-written summary
Mg deficiency inhibited citrus Mg uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg deficiency inhibited plant Mg uptake but enhanced Mg remobilization from parent to branch organs, thus changing related growth variables and physiological parameters, including protein synthesis and antioxidant enzyme activity.”
t0“citrus”
Claim · model-written summary
Mg deficiency enhanced Mg remobilization from parent to branch organs.
- Treatment
- Mg deficiencye0
- Outcome
- Mg remobilizatione0
- Direction
- enhancede0
- Qualifier
- from parent to branch organse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg deficiency inhibited plant Mg uptake but enhanced Mg remobilization from parent to branch organs, thus changing related growth variables and physiological parameters, including protein synthesis and antioxidant enzyme activity.”
t0“citrus”
Claim · model-written summary
Mg remobilization changed protein synthesis and antioxidant enzyme activity.
- Outcome
- protein synthesis and antioxidant enzyme activitye0
- Qualifier
- Mg remobilization from parent to branch organse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg deficiency inhibited plant Mg uptake but enhanced Mg remobilization from parent to branch organs, thus changing related growth variables and physiological parameters, including protein synthesis and antioxidant enzyme activity.”
t0“citrus”
Claim · model-written summary
PCA variations clustered in parent leaves but separated in branch leaves under different Mg conditions.
- Outcome
- highly clustered in both the upper and lower parent leaves, but highly separated in branch leavese0
- Qualifier
- under the different Mg conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moreover, in the principal components analysis, these variations were highly clustered in both the upper and lower parent leaves, but highly separated in branch leaves under the different Mg conditions.”
t0“citrus”
Claim · model-written summary
Mg management should be optimized for sustainable citrus production.
- Outcome
- Mg management should be optimizede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These findings suggest that Mg management should be optimized for sustainable citrus production.”
The same questions in other papers
magnesium atom · growth · CitrusResults agree
1 paper in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
magnesium atom · nutrient: content · CitrusResults agree
2 papers in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.